12 ft x 17 ft x 20.8 ft Green Right Triangle Sun Shade Sail - Durable

Our review of the 12' x 17' x 20.8' Green Right Triangle Sun Shade Sail finds it best suited for homeowners and renters who need a large, shaped canopy to cut heat and UV exposure over a patio, pool or carport. The single biggest reason to buy is its combination of heavy-duty virgin polyethylene fabric and engineered curved edges that keep the sail taut, which together deliver reliable shading, ventilation and up to 95% UV blockage without feeling stuffy. This review focuses on real-world use, durability, and whether the included hardware and fit make installation straightforward.

Key Features

• Corner-to-corner sizing: Measurements are taken from corner to corner so buyers can plan mounting points accurately for a right triangle layout.
• Curved edges: Edges are slightly curved using a calculated radian to prevent sagging and maintain a neat, tensioned appearance over time.
• Virgin polyethylene fabric: The lightweight yet strong material provides up to 95% UV blockage and good tensile strength for long-lasting outdoor use.
• Seasonal versatility: The sail shades and cools in summer, offers ventilation, and gives light frost protection at night while remaining slightly rainproof.
• Customization available: The brand offers custom orders so the sail can be sized or adjusted for unusual backyard or patio layouts.
• 3-year limited warranty: A warranty period provides extra confidence in durability and material performance.

Who It's For

This shade sail is ideal for people who need a large triangular shade for a pool, patio, garden, driveway or carport and who value a tidy, tensioned look delivered by pre-curved edges. It suits DIY installers who can identify sturdy anchor points and want a breathable solution that blocks most UV while allowing airflow.

It may be less suitable for those seeking a fully waterproof canopy for heavy rain, or buyers who cannot install multiple anchor points at the correct distances, since the product relies on correct corner-to-corner measurements and tension to perform at its best.

Pros & Cons

Pros

• High UV protection with up to 95% blockage keeps shaded areas noticeably cooler.
• Curved edges and measured sizing reduce central sagging and improve long-term appearance.
• Durable virgin polyethylene offers strong tensile strength while remaining lightweight for easier handling.
• Custom sizing and a 3-year limited warranty add flexibility and peace of mind.

Cons

• Hardware included receives mixed feedback, so some installers may prefer to upgrade fasteners or fittings for the best long-term performance.
• Only slightly rainproof, so it is not a substitute for a waterproof awning in heavy or prolonged rain.

Specifications

Our Verdict

The 12' x 17' x 20.8' green right triangle shade sail is a practical, value-oriented choice for homeowners who want substantial UV protection with good airflow and a clean, tensioned look. Its engineered curved edges and durable polyethylene make it a sensible buy for patios, pools, and carports, though installers should check mounting hardware and avoid relying on it as a full waterproof solution.

Frequently Asked Questions

How is the size measured?
Measurements are taken from corner to corner, so plan anchor points based on those distances.

Is the fabric waterproof?
The fabric is slightly rainproof but not fully waterproof; it is designed primarily for shading, cooling and UV protection.

Can I order a custom size?
Yes, the manufacturer offers custom orders to fit nonstandard layouts or specific measurements.