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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.
Small Rectangle Plunge Pools
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
Medium Pools Most Popular for Families
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
Large Pools for Diving, Hosting & Entertaining
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
| 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.