21 ft x 24 ft x 31.9 ft Green Right Triangle Sun Shade Sail - Durable

In this review of the 21 ft x 24 ft x 31.9 ft green right triangle sun shade sail, the bottom line is simple: it is a practical, heavy-duty option for homeowners who need broad, reliable sun protection over pools, patios, driveways or carports. The reviewer found the sail's construction and measured curvature deliver a taut, attractive canopy that resists mid-span sagging while blocking intense sunlight. For anyone wanting a large, vented shade that cuts UV exposure while remaining reasonably light and customizable, this product is worth considering.

Key Features

• Corner-to-corner measurement: The size is specified from corner to corner so buyers can plan anchor points accurately for a true triangular coverage area.
• Curved edges to reduce sag: Edges are made slightly curved based on a calculated radian, which keeps the sail taut and improves appearance and water runoff.
• Virgin polyethylene fabric: Lightweight but with strong tensile strength, the material balances durability with ease of handling during installation.
• High UV blockage: The canopy provides up to 95% UV blockage and about 90% visibility reduction, making it effective for cooling and sun protection.
• Seasonal versatility: The fabric offers summer shading and ventilation, anti-frost benefits at night, and is slightly rainproof for light showers.
• Custom orders and warranty: The sail can be customized and is backed by a 3-Year Limited Warranty for added buyer confidence.

Who It's For

This shade sail is best for homeowners with a clear plan for mounting points who need coverage over a pool, patio, carport or garden area and want strong UV protection without a fully rigid structure. It suits DIY installers and landscapers who value a lightweight sail that can be tensioned to reduce sag.

Those who need a fully waterproof awning, a rigid metal canopy, or very small precise shading panels should look elsewhere; this product is slightly rainproof but is designed primarily for sun blockage, ventilation and seasonal use rather than heavy downpours or permanent roofing.

Pros & Cons

Pros

• Effective sun and UV reduction with up to 95% blockage so outdoor spaces stay cooler and protected.
• Curved-edge design prevents sagging and maintains a neat, tensioned look when installed correctly.
• Lightweight virgin polyethylene offers good tensile strength and easy handling during setup.
• Customizable sizing and a 3-Year Limited Warranty give flexibility and assurance to buyers.

Cons

• Hardware included receives mixed feedback, so buyers may need to source stronger attachments for windy or exposed locations.
• Only slightly rainproof; not a substitute for a waterproof roof in heavy rain.

Specifications

Shape	Right triangle
Size (corner to corner)	21 ft x 24 ft x 31.9 ft
Color	Green
Material	Virgin polyethylene
UV blockage	Up to 95%
Visibility reduction	About 90%
Warranty	3-Year Limited Warranty

Our Verdict

The 21 ft x 24 ft x 31.9 ft green right triangle shade sail is a solid value for anyone wanting substantial sun protection with good airflow and a tidy tensioned look. It is best for outdoor living areas where UV reduction and ventilation are priorities, and it offers customization and a 3-Year Limited Warranty that make it a sensible choice for seasonal and semi-permanent installations.

Frequently Asked Questions

Is this shade sail waterproof?
The sail is slightly rainproof for light showers but is not fully waterproof and is not intended to replace a sealed roof.

How are measurements taken?
Measurements are taken from corner to corner and the edges are curved to ensure the sail remains taut when installed.

Can I order a different size?
Yes, all products from this line are available to be customized to specific needs.