The Cabo San Lucas 33-Foot Fiberglass Pool from the Classic Collection.

Rectangular Fiberglass Swimming Pools

Premium fiberglass pools with modern rectangular designs and unmatched structural innovation.

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Modern classic fiberglass pools with FRP technology and thermoplastic reinforcement for unmatched strength.

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  • Uniform Depth

    Pure, flat-bottom design for seamless movement, safety, and modern living.

  • Smooth Gel-Coated Finish

    High-performance surface built for elegance and lasting durability.

  • Seamless Integration

    Sculpted for modern, traditional, and minimalist landscapes.

  • Full-Width Entry Steps

    Architectural access for a grand, welcoming arrival.

  • Wellness-Ready Designs

    Models with built-in spas, tanning ledges, and hydrotherapy zones.

  • White

    Crisp. Clean. Enduring.

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  • Light Blue

    Refreshing. Pure. Timeless.

    mosaic blue

Why Choose theClassic Collection?

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  • You Prioritize Superior Craftsmanship

    Only the highest quality fiberglass, engineered for lasting performance.

  • You Prefer a Smooth, Pure Finish

    Premium gel coat that feels as good as it looks.

  • You Value Luxury with Purpose

    Timeless elegance without unnecessary excess.

  • You Believe in Minimalist Design

    Clean lines. Pure forms. Lasting sophistication.

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15-Year Structural Manufacturer’s Warranty

Strength you can trust. Protection you deserve.

ICC-ES Accredited

Accredited quality. Assured performance.

Sustainability: Built to Protect the Planet

CO₂ Emissions Comparison

7.290 Kg

223 Kg

Concrete Pool

Fiberglass Pool

32x Less CO₂ Emissions than traditional concrete pools.

  • Energy-Efficient

    Retains heat better, reducing energy consumption.

  • Non-Porous Surface

    Resists algae, needing fewer chemicals.

  • Fast & Efficient Installation

    Prefabricated design cuts waste and impact.

  • Eco-Friendly Materials

    Durable structure and finish minimizes replacements.

  • Long-Lasting

    Designed for decades of use, reducing material waste over time.

Classic Designs in Real Spaces

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Trusted by Homeowners.Recommended by Experts.

Frequently Asked Questions

  • How much does a rectangular fiberglass pool cost?

    The cost of a rectangular swimming pool can vary based on its size, brand, features, and access. The average cost of a rectangular fiberglass pool in Canada is between $35,000 to $95,000. However, the exact cost of your pool will depend on the specifications of your project. Your authorized PENTARM POOLS dealer or fiberglass pool installer can provide you with an accurate cost estimate.

  • What sizes of rectangular fiberglass swimming pools do you offer?

    At PENTARM POOLS, our rectangular fiberglass swimming pools are available from 9 feet to 33 feet. This selection provides customers with various options for selecting the perfect pool for their project. We offer the broadest size range of flat-bottom fiberglass pools on the market, enabling homeowners to create an environment tailored to their space, needs, and preferences.

  • How does a rectangular fiberglass swimming pool compare to other types of swimming pools?

    In today’s market, rectangular fiberglass pools are a better choice than other types of inground pools, such as vinyl-liner and concrete pools. They appeal to most people, are faster to install, reasonably priced, and durable with lower long-term maintenance costs. Whether you want a pool for your own use or want to increase the value of your house, a rectangular fiberglass pool is an ideal choice.

  • Rectangular fiberglass pools compared to vinyl liner and concrete pools?

    Rectangular fiberglass pools may be a little more expensive than vinyl liner swimming pools in some areas in terms of upfront installation costs. However, they are more affordable than concrete pools in terms of costs. Regarding long-term costs, rectangular fiberglass pools are significantly less expensive than both vinyl liner and concrete pools, as you do not have to worry about resurfacing the pool or replacing the liner every few years with fiberglass pools.

  • How long does it take to install a rectangular fiberglass swimming pool?

    The installation of a rectangular fiberglass pool is notably fast due to its geometric shape. Our authorized dealers and fiberglass pool installers can install your rectangular fiberglass swimming pool within 2 to 5 days, depending on the size and complexity of the project. You would be able to jump into the pool and start creating fun memories in less than a week from the time the excavation starts.

  • What maintenance is required for a rectangular fiberglass swimming pool?

    The maintenance for rectangular fiberglass swimming pools is very easy in comparison to other types of swimming pools. This is due to the fiberglass (FRP) material and the gel-coated surface of the pool. A fibreglass pool is less likely to be covered by algae and maintains the heat more efficiently than a vinyl liner or a concrete pool. PENTARM POOLS authorized dealers will passionately guide you through the fiberglass swimming pool care basics and requirements.

  • Can a rectangular fiberglass swimming pool be customized?

    All of our rectangular fiberglass swimming pools are pre-fabricated shells that have been manufactured in a factory to predetermined dimensions and designs. As such, it cannot be customized and rather has to be chosen from available options by the fiberglass pool manufacturer. However, we have had pool contractors and authorized dealers who have purchased two different pool shells and integrated them for a unique look and use.

  • Can a fiberglass pool be resurfaced?

    Yes, a fiberglass pool can be resurfaced, similar to any other fiberglass pool. However, with respect to our fiberglass pools, this is neither a common nor a required practice. The reason for this is the high quality of our gel coat and carefully selected color options, which minimize color fading and reduce the need for resurfacing.

  • Can I use saltwater in my fiberglass pool?

    Yes, you can use saltwater systems in a rectangular fiberglass swimming pool. Fiberglass pools are ideal for saltwater systems due to their non-porous and corrosion-resistant surface due to the gel coat. A saltwater system in a fiberglass pool brings positive aspects, especially for families. The water is gentler on the skin, making it an ideal choice for families with children and beloved pets. Also, a saltwater pool is a healthier option for individuals with sensitive skin. It is essential to consult your pool installer or pool service company for proper maintenance of saltwater systems. Please note that certain areas may have specific regulations that restrict the use of saltwater systems. An authorized PENTARM POOLS dealer in your area will be able to assist you regarding this matter.

  • How does the installation process for a rectangular fiberglass swimming pool compare to other types of pools?

    A rectangular fiberglass pool is the easiest type of fiberglass pool to install due to its geometric shape with sharp and straight edges. Fiberglass pools can be installed 2 to 5 weeks faster than vinyl-liner pools and 8 to 10 weeks faster than concrete pools. Importantly, our fiberglass pools have a flat bottom, which makes the installation process faster and easier as the pool base remains flat without the need to achieve precise slopes, especially in the case of shallow-deep pools.

  • What are some of the design features that can be added to a rectangular fiberglass swimming pool?

    Rectangular fiberglass swimming pools can be customized with a variety of design features, including waterfalls, fountains, hydrotherapy seatings, lighting options and etc. Ideally, it is best to make a detailed list of all the features you want for your pool and share it with a landscape architect and/or an authorized PENTARM POOLS dealer.

  • How do I choose the right size for my rectangular fiberglass swimming pool?

    Choosing the right size for your rectangular fiberglass swimming pool depends on various factors, such as the dimensions of your backyard, how you plan to use the pool, other landscaping elements, and your budget. Your pool installer will be the right individual to work with you to determine the ideal size for your requirements. If you are planning to include additional features in your outdoor area, it is best to hear the professional opinion of a landscape architect to ensure harmony among all the elements in your backyard.

  • What are some of the benefits of a rectangular fiberglass swimming pool?

    A rectangular fiberglass swimming pool offers several benefits, including an attractive design that goes well with classic, transitional and modern homes and landscape designs. Some of the other benefits are the speed of installation, durability and the high ROI (Return on Investment) if you are planning to sell your house.

  • What is the warranty on a rectangular fiberglass pool?

    The warranty on our Rectangular fiberglass pool is a 15-year structural manufacturer’s warranty from the date of installation.