If you want a rectangular fiberglass pool where more people can stand, play, and move comfortably, this video is a good place to start. Mindy from Thursday Pools explains why flat-bottom rectangle pools remain a popular choice for families who want active, social use from their backyard pool. Mindy walks through the benefits of a consistent sport depth and points to Thursday Pools models like Lil Bob, Lil Bob LX, Spirit, Magnate, Mack Daddy, and several Plunge Pool Series designs that offer flat-bottom layouts in both larger and smaller footprints.
Topic: Shapes & Sizes
Cathedral LX
Cathedral LX Fiberglass Pool
Timeless Design Meets Spacious, Modern Luxury
The Cathedral LX fiberglass pool brings classic Greco-Roman elegance to life in a large inground pool design made for modern living. Its bold curves and symmetrical layout create a grand presence, while the expansive sun shelf and tanning ledge invite both play and pure relaxation. With two generous pool sizes, this large fiberglass pool offers space to swim, gather, and unwind in comfort. Take a backyard tour to see how the Cathedral LX can turn your outdoor area into a timeless retreat.
Cathedral LX Pool Photos
Cathedral LX Pool Features
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Like this design?
Get a pocket pool model sent to your home. See the built-in features and feel the finish before you choose the Cathedral LX for your backyard. You simply pay $9 shipping and handling.
Available Roman Pool Sizes & Specifications
Cathedral LX
16′ x 36′ 5’8″
Cathedral LX
16′ x 40′ 6′
How Much Does a Cathedral LX Inground Pool Cost?
Fiberglass inground pool costs will vary based on a number of factors, including where you live and how accessible your yard is. You’ll need to contact a Thursday Pools dealer near you for an estimate. But for a ballpark estimate, plan on about $1800 per foot of pool length, installed. To get an idea of the costs for your own inground pool project, use our handy Pool Cost Calculator.
Cathedral LX Pool Videos
Available Colors
Arctic Shimmer
Arctic Shimmer
California
California
Caribbean Sparkle
Caribbean Sparkle
Diamond
Diamond
Maya
Maya
Sandstone
Sandstone
The final finished product may vary from the color samples on this page.
Optional Innovations
Geo-Anchor Pool Wall® for Fiberglass Pools
While some may classify our Geo-Anchor Pool Wall® as a fiberglass pool accessory, it’s far more than that, and it’s only available from Thursday Pools! …
Lucky 7 Skimmer®
The Lucky 7 Skimmer is the first skimmer in the fiberglass industry specifically designed for fiberglass pools. Manufactured with a 7-degree angle and mounting plate, it provides a better fit for fiberglass pool walls …
Backfill Eliminator®
Our mission is to help homeowners like you enjoy your pool and make a lifetime of memories with family and friends. We started with the premise we could make better…
Available Options
Wet Deck
Just want to get your feet wet? Or maybe you’d like to sit in a shallow spot, catch some rays and keep your cool. The Wet Deck is a marvelous addition to any pool, with custom spillway options to tie it all together in your own private backyard oasis.
Wading Pool
This is the ultimate playground for small children. The uniform depth allows for easy play, without the hazard of wandering toward a deep end. And the bench is the perfect spot for big kids to sit, relax, and watch over the youngsters.
Spa
The word you’re looking for is “bliss.” If you’re after the ultimate in relaxation and luxury, adding a Spa to your pool area will result in over-the-top contentment. The tension of the day will simply melt away. Enjoy the Spa with the whole family, or keep it all to yourself!
The Grand Spa
Escape the commonplace with The Grand Spa from Thursday Pools. You’ll love the look and feel of this luxurious, resort-like spa when it’s conveniently located in your own backyard. Take the plunge: You deserve a staycation every day.
Related Content
Splendor, Enjoyment, and Relaxation are Yours With the Cathedral LX Inground Fiberglass Pool
Splendor, Enjoyment, and Relaxation are Yours With the Cathedral LX Inground Fiberglass Pool
If you’re an aficionado of Greco-Roman style architecture, you’ll immediately notice that the centerpiece tanning ledge and walk-in stairs combine to create a stately and classical posture for this elegant, medium-size pool.
What’s the Lowdown on Tanning Ledges
What’s the Lowdown on Tanning Ledges
It’s easy to get excited about the variety of available features as you explore inground pools.
Five Tips to Create an Amazing Fiberglass Swimming Pool Oasis
Five Tips to Create an Amazing Fiberglass Swimming Pool Oasis
Inground fiberglass pools are a great way to relax with your family and friends.
Similar Pools
Cathedral
Lil Bob
Titus
Frequently Asked Questions
What’s the difference between Cathedral and Cathedral LX?
The Cathedral LX keeps the classic Greco-Roman style of the original Cathedral design, but adds a 9-foot-diameter tanning ledge flanked by two sets of entry steps. The added shallow lounging space gives Cathedral LX a more relaxation-forward layout while preserving the timeless symmetry that defines the shape.
What is the water depth of Cathedral LX’s tanning ledge?
The Cathedral LX tanning ledge has a 12-inch depth, which typically gives you about 6 to 8 inches of water depending on your fill level. That shallow-water zone creates an easy place to lounge, cool off, and enjoy the water without stepping into the main swim area right away.
How many chairs fit on Cathedral LX’s tanning ledge?
The Cathedral LX features a 9-foot-diameter circular tanning ledge that fits two chairs or Ledge Lounger® chaises comfortably. You still get smooth movement through the shallow end thanks to the surrounding entry steps that frame the ledge.
What are Cathedral LX’s exact dimensions?
Thursday Pools offers the Cathedral LX in two size options. Here are the outside dimensions and inside dimensions for each model:
- O.D. 16’ x 36’ 5’8″ | I.D. 15’ x 35’ 5’8”
- O.D. 16’ x 40’ 6′ | I.D. 15’ x 39’ 6′
How many gallons of water does Cathedral LX hold?
Water volume depends on the size you choose. Here are the gallon capacities for each Cathedral LX model:
- 16’ x 36’: 10,500 gallons
- 16’ x 40’: 12,500 gallons
Does Cathedral LX support using an automatic pool cover?
Yes, Cathedral LX is auto-cover-ready. Automatic pool covers help improve safety, keep debris out, retain heat, and lower maintenance demands, making them a strong fit for many fiberglass inground pool owners.
Get an Estimate
Thursday Pools works through a dealer network. Once you have submitted your inquiry, Thursday Pools will work diligently to have an independent dealer contact you in a timely manner and provide the information you have requested.
Roman Fiberglass Pools
ROMAN POOLS BRING CLASSIC ELEGANCE HOME
A Roman fiberglass pool combines straight sides with softly rounded ends, drawing on the timeless symmetry of ancient bath design to create a shape that feels both refined and welcoming. Among the fiberglass pool shapes Thursday Pools offers, Roman pools stand out for homeowners prioritizing easy conversation, relaxed lounging, and everyday swimming.
THE BENEFITS OF CHOOSING A ROMAN FIBERGLASS POOL
Timeless Style with Softer Curves
Roman pools bring symmetry and structure, then soften the look with rounded ends that add warmth and classic appeal.
Space-Efficient Shape That Still Feels Grand
Straight sides help you use backyard space wisely, especially in narrower layouts, while the domed ends create a distinctive focal point.
Designed for Comfort and Connection
Wide steps and built-in seating make Roman pools feel social and welcoming for lingering conversations or laid-back afternoons.
Elegant Backyard Versatility
Roman pools complement modern landscaping and traditional architecture. They can anchor a formal layout or elevate a relaxed outdoor retreat.
Fiberglass Makes Roman Luxury More Attainable
Roman shapes can cost more in other pool types due to custom craftsmanship. Fiberglass delivers the same timeless design in a one-piece shell built for long-lasting performance.
THE BENEFITS OF CHOOSING A ROMAN FIBERGLASS POOL
Timeless Style with Softer Curves
Roman pools bring symmetry and structure, then soften the look with rounded ends that add warmth and classic appeal.
Space-Efficient Shape That Still Feels Grand
Straight sides help you use backyard space wisely, especially in narrower layouts, while the domed ends create a distinctive focal point.
Designed for Comfort and Connection
Wide steps and built-in seating make Roman pools feel social and welcoming for lingering conversations or laid-back afternoons.
Elegant Backyard Versatility
Roman pools complement modern landscaping and traditional architecture. They can anchor a formal layout or elevate a relaxed outdoor retreat.
Fiberglass Makes Roman Luxury More Attainable
Roman shapes can cost more in other pool types due to custom craftsmanship. Fiberglass delivers the same timeless design in a one-piece shell built for long-lasting performance.
ROMAN VS. RECTANGLE VS. FREEFORM POOLS
Each pool shape creates a different backyard feel and supports different priorities. A Roman fiberglass pool blends classic symmetry with rounded ends for a softer, more architectural look. You get the efficiency of straight sides plus a timeless design that feels elevated and inviting.
A rectangular fiberglass pool leans fully into straight lines and swim performance. It suits lap swimmers, modern design lovers, and homeowners who want the cleanest layout for patios and automatic pool covers. A freeform fiberglass pool brings organic curves and a relaxed, nature-inspired vibe. It flows beautifully with landscaping and creates a resort feel that feels playful, peaceful, or both.
Choose a Roman Pool if You:
- Love timeless symmetry with softened, elegant ends
- Want a classic focal point that feels refined and inviting
- Prefer curved built-in seating for gathering and relaxing
- Want straight sides without sharp corners
- You value visual balance and architectural appeal
Choose a Rectangle Pool if You:
- Want a clear lap-swimming lane
- Plan to install an automatic pool cover
- Prefer modern, structured design lines
- Want defined edges for patio alignment
- Prioritize swim efficiency and symmetry
Choose a Freeform Pool if You:
- Want a softer, more natural backyard vibe
- Love curves that complement landscaping and patios
- Prefer a relaxed, resort-inspired look
- Care more about atmosphere than strict swim symmetry
- Want lounging zones that feel organic and social
CHOOSING A ROMAN POOL SIZE
Before you choose a Roman pool design and size, think about how you want your pool to feel day to day, from lap space to lounging space, and how much patio or landscaping you want to keep around it.
Cathedral | California Finish
Medium Roman Pools
14’ x 33’
Medium Roman pools offer comfortable swim space and room to gather without dominating a standard-size lot. The proportions work well for everyday family use, entertaining, and backyards where you want the pool to anchor the space without taking over. Benefits of a medium Roman pool include:
• Comfortable swim and gathering space
• Strong proportion on standard backyard lots
• Room for entertaining without crowding the yard
• Suits both active swimming and relaxed lounging
Cathedral LX | California Finish
Large Roman Pools
16' X 36' to 16’ x 40’
Large Roman pools are best suited for homeowners who want the pool to be the centerpiece of the backyard with room to match. The longer swim corridor and wider footprint support bigger gatherings and give the shape the space it needs to make a full impression. Benefits of a large Roman pool include:
• More swim distance and gathering capacity
• Clear separation between lounging and active swim zones
• Acts as a dramatic centerpiece for wider or deeper yards
• Room to build a full outdoor destination around it
ROMAN FIBERGLASS POOLS SPECIFICATIONS
Click any column header to sort ⇅
| Pool Model | Available Sizes | Tanning Ledge | Steps/Benches | Deep End Bench | Deep End (5+ ft) | Courtesy Ledges |
|---|---|---|---|---|---|---|
| CATHEDRAL | 14' x 33' 5' | ✗ NO | ✓ YES | ✗ NO | ✓ YES | ✗ NO |
| CATHEDRAL LX | 16' x 36' 5'8" | 16' x 40' 6' | ✓ YES | ✓ YES | ✓ YES | ✓ YES | ✓ YES |
THURSDAY POOLS’ ROMAN FIBERGLASS POOL COLLECTION
Cathedral
Classic Roman symmetry with an inviting layout built for relaxing and connecting. Cathedral brings timeless style to backyards that want elegance without excess.
FEATURES
Sizes: 14’ x 33’ 5’
Built-In Steps/Benches • Open Swim Area • Deep-End Bench • Deep End
Cathedral LX
The Roman pool, elevated. Cathedral LX keeps the iconic curved-end design and adds a luxury-forward tanning ledge that turns everyday pool time into true retreat time.
FEATURES
Size:16’ x 36’ 5’8” | 16’ x 40’ 6’
Tanning Ledge • Built-In Steps/Benches • Open Swim Area • Deep-End Bench • Deep End • Courtesy Ledge
FREQUENTLY ASKED ROMAN FIBERGLASS POOL QUESTIONS
HOW MUCH DOES A ROMAN FIBERGLASS POOL INSTALLATION COST?
Most fiberglass pool installations range between $30,000 and $85,000 or more, depending on pool size, features, delivery distance, site access, and regional labor costs. For a full breakdown of fiberglass pool installation costs, see our Fiberglass Pool Cost Guide. Financing is also available from certain lenders for those interested in financing their pool project.
WHAT AFFECTS THE PRICE OF A ROMAN POOL?
Pool size and depth profile drive cost first. Yard access, excavation conditions, retaining walls, decking design, water features, and landscaping plans also influence pricing.
WHAT MAKES A ROMAN POOL DIFFERENT FROM A RECTANGULAR POOL?
Roman pools keep straight sides for efficient use of space, then add rounded ends for a softer, more classic look. Rectangle pools stay fully linear and often prioritize lap swimming lanes and automatic cover compatibility.
DO ROMAN POOLS COME WITH TANNING LEDGES OR SHALLOW LOUNGING AREAS?
Thursday Pools’ Cathedral LX design includes a large, luxurious tanning ledge that makes relaxation a main feature.
WHAT DOES A ROMAN FIBERGLASS POOL INSTALLATION LOOK LIKE?
Your installer excavates, sets the one-piece fiberglass shell, connects plumbing, and completes backfill and decking. Most projects wrap within a few weeks under normal conditions, depending on weather and site complexity.
DO ROMAN POOLS WORK WELL IN NARROW YARDS?
With straight lines along its two long sides, Roman pools align well along fences, patios, and property lines of narrow backyards. The rounded ends add style without sacrificing the space efficiency of straight sides.
ARE ROMAN POOLS HARDER TO MAINTAIN BECAUSE OF CURVED ENDS?
Roman pools can collect debris in curved areas and steps, so regular brushing in those zones helps keep everything clean. Fiberglass surfaces inherently support easier cleaning and resist algae buildup, which makes routine care simpler overall.
Interested in seeing more pool designs?
Coffee Table Book LP
Stunning Pool Designs to Inspire Your Backyard Transformation
Complete the form below to request your complimentary inspiration book featuring breathtaking pool installations from across the country.
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Available Nationwide
Sold and installed by independent dealers, our pools are available nationwide
ISO 9001 & 14001 Certified
We’re the only fiberglass pool manufacturer certified in international quality & environmental standards
35+ Years of Innovation
Our fiberglass pools are made in the USA in a temperature-controlled 50,000 sqare-foot facility
Ready to Start Planning Your Dream Pool?
Get your free design inspiration book delivered to your door. No obligation, just beautiful ideas.
Frequently Asked Questions
When will I receive my book?
Your book will ship within 5-7 business days of your request. Delivery typically takes an additional 3-5 business days depending on your location.
Is there really no cost?
The book is absolutely free. No shipping charges, no hidden fees. We simply love sharing beautiful pool designs and helping homeowners explore their options.
Will I be contacted by a salesperson?
We may occasionally send helpful design tips and information about our pools via email, and you can unsubscribe anytime. We also work with a network of Independent Dealers and can connect you with a trusted dealer in your area upon request.
What if I'm just in the early dreaming phase?
The book is perfect for someone that’s in the dreaming phase! It’s exactly what this book is for. Whether you’re planning for next year or just exploring possibilities, this book is meant to inspire without any pressure.
Aspen
Aspen Fiberglass Pool
Serenity Meets Sophistication
The Aspen inground fiberglass pool blends elegance, comfort, and versatility in a stunning design. With five size options ranging from compact plunge pool to large rectangle pool, there’s an Aspen model that fits beautifully in nearly any yard. The integrated tanning ledge and bench seating create comforting relaxation zones for family fun, peaceful mornings, or unforgettable nights under the stars. Watch our backyard tour video to see why the patented Aspen (Patent #D851,781 S) is a best-selling rectangle fiberglass pool that can transform your yard into a destination for luxury, laughter, and connection.
Aspen Pool Photos
Aspen Pool Features
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Like this design?
Get a pocket pool model sent to your home. See the built-in features and feel the finish before you choose the Aspen for your backyard. You simply pay $9 shipping and handling.
Available Rectangle Pool Sizes & Specifications
Aspen
12′ x 25′ 5’1″
Aspen
14′ x 30′ 5’5″
Aspen
14′ x 35′ 5’5″
Aspen
16′ x 35′ 5’5″
Aspen
16′ x 40′ 5’10”
How Much Does an Aspen Inground Pool Cost?
Fiberglass inground pool costs will vary based on a number of factors, including where you live and how accessible your yard is. You’ll need to contact a Thursday Pools dealer near you for an estimate. But for a ballpark estimate, plan on about $1800 per foot of pool length, installed. To get an idea of the costs for your own inground pool project, use our handy Pool Cost Calculator.
Aspen Pool Videos
Available Colors
Arctic Shimmer
Arctic Shimmer
California
California
Caribbean Sparkle
Caribbean Sparkle
Diamond
Diamond
Maya
Maya
Sandstone
Sandstone
The final finished product may vary from the color samples on this page.
Optional Innovations
Geo-Anchor Pool Wall® for Fiberglass Pools
While some may classify our Geo-Anchor Pool Wall® as a fiberglass pool accessory, it’s far more than that, and it’s only available from Thursday Pools! …
Lucky 7 Skimmer®
The Lucky 7 Skimmer is the first skimmer in the fiberglass industry specifically designed for fiberglass pools. Manufactured with a 7-degree angle and mounting plate, it provides a better fit for fiberglass pool walls …
Backfill Eliminator®
Our mission is to help homeowners like you enjoy your pool and make a lifetime of memories with family and friends. We started with the premise we could make better…
Available Options
Wet Deck
Just want to get your feet wet? Or maybe you’d like to sit in a shallow spot, catch some rays and keep your cool. The Wet Deck is a marvelous addition to any pool, with custom spillway options to tie it all together in your own private backyard oasis.
Wading Pool
This is the ultimate playground for small children. The uniform depth allows for easy play, without the hazard of wandering toward a deep end. And the bench is the perfect spot for big kids to sit, relax, and watch over the youngsters.
Spa
The word you’re looking for is “bliss.” If you’re after the ultimate in relaxation and luxury, adding a Spa to your pool area will result in over-the-top contentment. The tension of the day will simply melt away. Enjoy the Spa with the whole family, or keep it all to yourself!
The Grand Spa
Escape the commonplace with The Grand Spa from Thursday Pools. You’ll love the look and feel of this luxurious, resort-like spa when it’s conveniently located in your own backyard. Take the plunge: You deserve a staycation every day.
Related Content
Choosing the Perfect Furniture for Your Tanning Ledge
Choosing the Perfect Furniture for Your Tanning Ledge
Built-in tanning ledges in fiberglass pools are dreamy. Understandably, they’re a highly sought-after feature with fiberglass pool owners. Tanning ledges are ideal spots to relax after a long day…
Five Tips to Create an Amazing Fiberglass Swimming Pool Oasis
Five Tips to Create an Amazing Fiberglass Swimming Pool Oasis
Inground fiberglass pools are a great way to relax with your family and friends. Whether you’re looking for an easy way to refresh your existing backyard pool oasis or build…
Properly Backfilling and Installing Your Pool’s Tanning Ledge
Properly Backfilling and Installing Your Pool’s Tanning Ledge
Inground fiberglass swimming pools featuring built-in tanning ledges are, in a word, heaven. They allow swimmers to lounge in just enough water to keep cool while still soaking up the…
Similar Pools
Goliath
Monolith
Cathedral LX
Frequently Asked Questions
What is the water depth of Aspen’s tanning ledge?
Aspen’s tanning ledge gives you a true shallow-water lounge zone. Depending on your water level, in a full Aspen you’ll enjoy 6 to 8 inches of water depth in the 12-inch-deep tanning ledge area. It’s ideal for sunbathing, cooling off, and supervising little swimmers without committing to full pool depth.
How many chairs fit on Aspen’s tanning ledge?
The Aspen tanning ledge fits two chairs comfortably. You get a dedicated spot for relaxing in Ledge Loungers® or similar seating while still keeping entry and movement through the shallow area easy and natural.
What are Aspen’s exact dimensions?
Thursday Pools’ Aspen design comes in five unique size options so you can match your yard and your lifestyle. Here are the exact outside dimensions (O.D.) and inside dimensions (I.D.) for each model:
- O.D. 12’ x 25′ 5’1″ | I.D. 11′ x 24’6″ 5’1”
- O.D. 14’ x 30′ 5’5″ | I.D. 13’11” x 29′ 5’5”
- O.D. 14’ x 35′ 5’5″ | I.D. 13′ x 34′ 5’5”
- O.D. 16’ x 35′ 5’5″ | I.D. 14’11” x 34′ 5’5”
- O.D. 16’ x 40′ 5’10” | I.D. 14’11” x 39′ 5’10”
How many gallons of water does Aspen hold?
Water volume changes by pool size. Here are the gallon capacities for each Aspen model:
- 12’ x 25’: 7,425 gallons
- 14’ x 30’: 7,610 gallons
- 14’ x 35’: 8,423 gallons
- 16’ x 35’: 10,140 gallons
- 16’ x 40’: 13,090 gallons
Does Aspen include a perimeter courtesy ledge?
Aspen does include a perimeter courtesy ledge around the deep end, located 48 inches from the top of the pool. The ledge gives swimmers an easy place to pause, reposition, or rest along the edge during social pool time or when they need a quick break.
Does Aspen support using an automatic pool cover?
The Aspen’s rectangular shape makes it a strong match for automatic pool covers because straight edges support clean track alignment. An automatic cover can boost safety, reduce debris, help retain heat, and cut evaporation so you spend more time enjoying your pool and less time managing it.
Does Aspen support lap swimming?
Aspen’s wide-open swim lane makes laps feel natural and consistent. You can swim, float, and train without weaving around tight curves. If you love fitness-focused pool time, Aspen delivers structure that helps you keep a rhythm.
Does Aspen include built-in seating?
In addition to the tanning ledge area and built-in stairs where swimmers can sit and rest, Aspen also includes integrated bench seating that creates an easy place to gather, relax, and stay connected. You can sit in the water, supervise swimmers, or take a break between laps without leaving the pool.
How do I choose the right Aspen size for my backyard?
Begin with how you want to use your pool. Choose a smaller Aspen size if you want a sleek rectangle pool that preserves patio and outdoor living space. Choose a larger size if you want more room for swimming, hosting, and everyday hangouts. Your local Thursday Pools dealer can help you match the right Aspen footprint to your yard access, layout, and lifestyle goals.
Get an Estimate
Thursday Pools works through a dealer network. Once you have submitted your inquiry, Thursday Pools will work diligently to have an independent dealer contact you in a timely manner and provide the information you have requested.
Rectangle Fiberglass Pools
Rectangle Fiberglass Pools Built for YOUR Life
A rectangle fiberglass pool is a pre-molded, single-piece fiberglass pool with straight walls and clean corners—ideal for lap swimming, modern backyard design, and automatic safety covers. Thursday Pools reimagines the classic rectangle with innovative features and built-in comfort options designed for relaxing, fitness, and connection. As one of the most popular pool shapes, rectangles offer timeless appeal and practical functionality.
The Benefits of Choosing a Rectangle Fiberglass Pool
Ideal for Lap Swimming & Fitness
Straight edges create uninterrupted swim lanes, making it easy to add a swim jet system or stick to a consistent workout routine.
Compatible with Automatic Pool Covers
The straight track system fits cleanly on rectangular pools, improving safety, retaining heat, and cutting energy costs.
Efficient Use of Space
Rectangle pools align naturally along fences, homes, and patios, making them a smart choice for narrow or smaller backyards.
Timeless Style
Clean lines work with both modern and traditional architecture, so a rectangle pool looks at home in almost any backyard.
Built for How You Use It
Choose from tanning ledges, integrated benches, zero-entry options, swim-out benches, or varied depth configurations depending on how you plan to use your pool.
The Benefits of Choosing a Rectangle Fiberglass Pool
Ideal for Lap Swimming & Fitness
Straight edges create uninterrupted swim lanes, making it easy to add a swim jet system or stick to a consistent workout routine.
Compatible with Automatic Pool Covers
The straight track system fits cleanly on rectangular pools, improving safety, retaining heat, and cutting energy costs.
Efficient Use of Space
Rectangle pools align naturally along fences, homes, and patios, making them a smart choice for narrow or smaller backyards.
Timeless Style
Clean lines work with both modern and traditional architecture, so a rectangle pool looks at home in almost any backyard.
Built for How You Use It
Choose from tanning ledges, integrated benches, zero-entry options, swim-out benches, or varied depth configurations depending on how you plan to use your pool.
RECTANGLE VS. FREEFORM VS. ROMAN FIBERGLASS POOLS
Each pool shape creates a different backyard feel and supports different priorities. A rectangular fiberglass pool gives your backyard a clean, open look that pairs beautifully with almost any style of home. Its classic lines feel as natural beside a modern patio as they do in a traditional backyard.
A freeform fiberglass pool features soft curves that blend into gardens and landscaping, creating a backyard that feels like an outdoor escape. A Roman fiberglass pool combines straight sides with gently rounded ends, giving your backyard a classical, architectural elegance.
Choose a Rectangle Pool if You:
- Want the maximum length lap-swimming lane
- Plan to install an automatic pool cover
- Prefer modern or minimalist architectural design
- Have a narrow backyard layout
- Want clean patio alignment and defined edges
Choose a Freeform Pool if You:
- Prefer soft, natural curves
- Want a lagoon-inspired aesthetic
- Plan to incorporate rock features or tropical landscaping
- Care more about organic appearance than swim space
- Want lounging zones that feel organic and social
Choose a Roman Pool if You:
- Love timeless symmetry with softened, elegant ends
- Want a classic focal point that feels refined and inviting
- Prefer curved built-in seating for gathering and relaxing
- Want straight sides without sharp corners
- You value visual balance and architectural appeal
Choosing a Rectangular Pool Size
Before choosing a specific rectangle fiberglass pool model, understand which size fits your yard and how you plan to use it. Size impacts budget, patio space, swim function, and overall backyard flow.
Sea Turtle in California Finish
Small Rectangle Plunge Pools
8'4" x 16’ to 12’ x 25’
Small rectangle fiberglass pools are ideal when yard space is limited or when you want the pool to complement your outdoor living area instead of dominate it. Benefits of small rectangle pools include:
• Plunge pool style living
• Cooling off and relaxing
• Light exercise
• Preserving space for patio, turf, or outdoor kitchens
Aspen | Diamond Finish
Medium Pools Most Popular for Families
13.5' x 28' to 14' x 36'
Medium rectangle pools offer the most flexibility for everyday use. They provide enough length for laps and games while still leaving room for landscaping and gathering areas in a standard-size (roughly 8,400 sq ft) lot. Benefits of a medium rectangle pool include:
• Lap swimming without a full competition length
• Room for pool games and open swim areas for kids and guests
• A balanced backyard layout with space remaining for patio, turf, or outdoor kitchens
Monolith | California Finish
Large Pools for Diving, Hosting & Entertaining
13.5' x 35' to 16' x 41'
Large rectangle pools are best suited for homeowners who want swimming distance and gathering capacity to be the priority in their backyard design. In some instances, this size shifts the yard’s focus toward the pool itself rather than surrounding lawn space or secondary features.
• Capacity for larger groups without the pool feeling crowded
• Clear separation between shallow lounging areas and active swim space
• Strong visual proportion in wider or deeper backyards
Rectangle Fiberglass Pools Specifications
Click any column header to sort ⇅
| Pool Model | Available Sizes | Tanning Ledge | Built-in Spa | Steps/Benches | Courtesy Ledges | Swim-Out Benches | Flat-Bottom Depth | Deep End (5+ ft) | Diving Pool | Beach Entry |
|---|---|---|---|---|---|---|---|---|---|---|
| ASPEN |
12' × 25' 5'1" 14' × 30' 5'5" 14' × 35' 5'5" 16' × 35' 5'5" 16' × 40' 5'10" |
✓ YES | ✗ NO | ✓ YES | ✓ YES | ✓ YES | ✗ NO | ✓ YES | ✗ NO | ✗ NO |
| GOLIATH |
12' × 25' 5'4" 14' × 29' 5'8" 14' × 33' 6' 16' × 33' 6' 16' × 37' 6'4" 16' × 41' 6'8" |
✗ NO | ✗ NO | ✓ YES | ✓ YES | ✓ YES | ✗ NO | ✓ YES | ✗ NO | ✗ NO |
| GRACE BEACH ENTRY |
14' × 36' 5'6" 16' × 36' 5'6" 16' × 40' 5'10" |
✓ YES | ✗ NO | ✓ YES | ✓ YES | ✓ YES | ✗ NO | ✓ YES | ✗ NO | ✓ YES |
| LIL BOB |
13.5' × 27.5' 4'6" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| LIL BOB LX |
13.5' × 35.5' 4'6" |
✓ YES | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| MACK DADDY |
16' × 36' 4'8" |
✓ YES | ✓ YES | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| MAGNATE |
16' × 36' 4'8" |
✓ YES | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| MONOLITH |
16' × 40' 8'6" |
✗ NO | ✗ NO | ✓ YES | ✓ YES | ✓ YES | ✗ NO | ✓ YES | ✓ YES | ✗ NO |
| SEA TURTLE |
9.5' × 19.5' 4'6" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| SPIRIT |
13.5' × 40' 4'6" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| THE DRIFT |
8'4" × 16' 4'8" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| THE NEST |
8'4" × 16' 4'8" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
| THE NOOK |
8'4" × 16' 4'8" |
✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✓ YES | ✗ NO | ✗ NO | ✗ NO |
Thursday Pools’ Rectangle Fiberglass Pool Collection
Aspen
A modern rectangle pool that balances relaxation and versatility. The Aspen fits beautifully into a wide range of backyards and lifestyles.
FEATURES
Sizes: 12′ × 25′ 5’1″ | 14′ × 30′ 5’5″ | 14′ × 35′ 5’5″ | 16′ × 35′ 5’5″ | 16′ × 40′ 5’10”
Tanning Ledge • Built-In Steps • Benches • Courtesy Ledge • Swim-Outs • Deep End (5+ Feet)
Goliath
A rectangle pool designed for big moments and bigger gatherings. Goliath scales effortlessly from everyday family time to full-on entertaining.
FEATURES
Sizes: 12′ × 25′ 5’4″ | 14′ × 29′ 5’8″ | 14′ × 33′ 6′ | 16′ × 33′ 6′ | 16′ × 37′ 6’4″ | 16′ × 41′ 6’8″
Built-In Steps • Benches • Courtesy Ledge • Swim-Outs • Deep End (5+ Feet)
Grace Beach Entry
A rectangular pool with a resort-inspired zero-entry experience. Grace blends effortless access with elevated backyard style.
FEATURES
Sizes: 14′ × 36′ 5’6″ | 16′ × 36′ 5’6″ | 16′ × 40′ 5’10”
Beach Entry • Tanning Ledge • Built-In Steps • Benches • Courtesy Ledge • Swim-Outs • Deep End (5+ Feet)
Lil Bob
Sporty, social, and perfectly balanced. Lil Bob brings energy and connection to a compact rectangle pool footprint.
FEATURES
Size: 13.5′ × 27.5′ 4’6″
Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
Lil Bob LX
An elevated take on the original Lil Bob. Lil Bob LX adds more room to lounge while keeping the fun front and center.
FEATURES
Size: 13.5′ × 35.5′ 4’6″
Tanning Ledge • Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
Mack Daddy
One pool that does it all. Mack Daddy blends social space, relaxation, and versatility into one standout rectangle design.
FEATURES
Size: 16′ × 36′ 4’8″
Tanning Ledge • Built-in Spa • Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
Magnate
Confident, refined, and purpose-built. The Magnate makes a bold statement in modern rectangular pool design.
FEATURES
Size: 16′ × 36′ 4’8″
Tanning Ledge • Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
Monolith
Bold, modern, and built to stand out. The Monolith delivers a powerful rectangle pool presence with room to move and unwind.
FEATURES
Size: 16′ × 40′ 8’6″
Built-In Steps • Benches • Courtesy Ledge • Swim-Outs • Deep End (5+ Feet) • Type 1 Diving Pool
Sea Turtle
Small in size, big on impact. Sea Turtle delivers relaxed plunge-pool living in a clean rectangular form.
FEATURES
Size: 9.5′ × 19.5′ 4’6″
Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
Spirit
A rectangular pool made for movement and togetherness. Spirit keeps games, gatherings, and good times flowing naturally.
FEATURES
Size: 13.5′ × 40′ 4’6″
Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
The Drift
Effortless and easygoing. The Drift brings relaxed plunge-pool vibes to a streamlined rectangular design.
FEATURES
Size: 8’4″ × 16′ 4’8″
Built-In Steps • Benches • Flat-Bottom Standing/Sport Depth
The Nest
Calm, modern, and thoughtfully sized. The Nest turns small spaces into comfortable rectangular pool retreats.
FEATURES
Size: 8’4″ × 16′ 4’8″
Built-In Steps • Flat-Bottom Standing/Sport Depth
The Nook
Minimalist and inviting. The Nook offers simple luxury in a compact rectangular plunge pool.
FEATURES
Size: 8’4″ × 16′ 4’8″
Built-In Steps •Benches • Flat-Bottom Standing/Sport Depth
Frequently Asked Rectangle Fiberglass Pool Questions
How much does a rectangular fiberglass pool installation cost?
Most fiberglass pool installations range between $30,000 and $85,000 or more, depending on pool size, features, delivery distance, site access, and regional labor costs. Larger rectangle pools, added features, automatic covers, upgraded decking, and complex excavation conditions can increase the necessary investment. Your backyard layout and design goals ultimately determine final pricing. For a full breakdown of fiberglass pool installation costs, see our Fiberglass Pool Cost Guide. Financing is also available from certain lenders for those interested in financing their pool project.
What affects the price of a rectangular pool?
Pool length and depth profile drive cost first. Site access, soil conditions, elevation changes, decking choices, water features, and automatic pool covers also influence pricing.
What’s the difference between rectangle pools and freeform pools?
Rectangle pools emphasize clean lines, lap-friendly swim lanes, and modern symmetry. Freeform pools create a softer, more organic backyard feel. If you value clean lines, swim efficiency, and automatic cover compatibility, rectangle often wins. Many homeowners also choose a rectangle fiberglass pool for a small backyard. If you prefer natural curves and a lagoon aesthetic, freeform may suit you better.
Are rectangular pools better with a flat bottom or a deep end?
Choose a flat-bottom rectangle pool if you plan to play games, exercise, or enjoy social standing depth. Select a deep-end design if you prefer more vertical swim space, floating freedom, or diving capability in approved models. Your intended use should guide this decision.
Should I prioritize a tanning ledge or open swim space?
If relaxation ranks first, choose a tanning ledge for shallow lounging and sunbathing. If activity and exercise matter more, prioritize open swim length. Many rectangle fiberglass pool designs balance both, giving you space to lounge and move.
How long does it take to install a fiberglass rectangle pool?
Fiberglass pools arrive as single-piece shells manufactured in a controlled environment. Your installer excavates, sets the shell, connects plumbing, and completes backfill and decking. Many projects finish within a few weeks under normal conditions, depending on weather and site complexity.
Interested in seeing more pool designs?
Pool Cost Plan LP
From Pipe Dream to Pool Plan
You've been thinking about it. Now let's make it real.Turn Your Pool Visions Into a Real Plan in 3 Simple Steps
Start with a ballpark estimate, understand what affects the cost, then connect with a local independent Thursday Pools dealer who’ll help you build a plan that fits your yard, your budget, and your life.
STEP 1: Get a Ballpark Estimate for Your Inground Fiberglass Pool
Use the Thursday Pools Pool Cost Calculator to see where pricing for your pool project could fall.
STEP 2: Understand Your Financing Options
There’s no one right way to finance an inground fiberglass pool purchase. Many homeowners build a personal pool cost plan by combining payment options depending on family financial goals, interest rates, or available liquidity.
Common Payment Approaches
Cash or savings
Home equity (LINE OF CREDIT OR CASH-OUT REFINANCING)
Home improvement loans
Mix of options
Financing Resources
Start Making Waves
Understand loans, interest, and financing prep better.
Get a Payment Estimte
Get insight into potential daily or weekly payment amounts.
Finance the Pool of Your Dreams
Read our ebook to get more information on available financing options.
NOTE: Thursday Pools shares financing options as education, not financial advice. Consult a financial advisor or lending professional before making any major purchase decisions.
STEP 3: Schedule a Site Visit for a Closer Look
Go from ballpark estimates to actual numbers and real next steps for your yard’s exciting addition with an independent Thursday Pools dealer near you. They’ll listen to your vision, help you navigate important decisions, and walk you through which site factors and personal preferences will impact your investment.
The following factors will affect your project’s price tag the most:
Site & Access
Permits, excavation, equipment access, and utility connections
Equipment & Utilities
Pump, filtration, heater, plumbing lines, electrical runs, and automation
Finish & Surroundings
Backfill, decking material, landscaping, lighting, and outdoor living space
Features & Safety
Water features, tanning ledges, spas, fencing, gates, and safety covers
Ready to Build Your Pool Plan?
Let’s make it real for your yard and budget.
Share a few details, and we’ll connect you with a local independent Thursday Pools dealer who’ll help you build a plan specific to your property and timeline.
2026 Brochure
Come on in … the water’s great!
Thursday Pools is the perfect choice for the inground fiberglass pool of your dreams. Get the details on our latest pool designs, check out cool features and options, and learn why our innovations set us apart in the fiberglass pool industry.
We welcome you to flip through the pages! And imagine yourself in your own backyard oasis. Be sure to check out our 2026 Brochure.
Plunge Pool Idea Book
Get inspired and explore the POSSIBILITIES!
Create a gorgeous, private backyard swimming pool oasis that’s unique and all your own. Now’s the time to get inspired and imagine the possibilities with the Plunge Pool Idea Book.
With this eBook, you can:
- Get ideas for landscaping and feature options.
- Explore fiberglass plunge pool designs by shape, size, and color that match your lifestyle.
- Imagine an outdoor living space that will become the backdrop for a lifetime of memories.
2026 Fiberglass Pool Idea Book
Get inspired and explore the POSSIBILITIES!
Create a gorgeous, private backyard swimming pool oasis that’s unique and all your own. Now’s the time to get inspired and imagine the possibilities with the 2026 Fiberglass Pool Idea Book.
With this eBook, you can:
- Get ideas for landscaping and feature options.
- Explore fiberglass pool designs by shape, size, and color that match your lifestyle.
- Imagine an outdoor living space that will become the backdrop for a lifetime of memories.