11ft x 21ft x 23.7ft Green Right Triangle Sun Shade Sail - Durable UV

In this review of the 11' x 21' x 23.7' green right triangle sun shade sail, the bottom line is simple: it is a practical, heavy-duty shade solution for homeowners who need reliable UV protection and a clean look over patios, pools, or carports. Our review finds the sail's strength and shape control - measurement taken corner to corner with slightly curved edges - make it effective at preventing sag and maintaining a taut, finished appearance while blocking up to 95% of UV rays and reducing visibility by about 90%.

Key Features

• Corner-to-corner sizing: Measurements are taken from corner to corner so the sail fits intended spans and mounts predictably without guesswork.
• Curved edge design: Edges are made slightly curved using a precise radian to prevent sagging in the middle and keep the canopy looking taut.
• Durable virgin polyethylene: The fabric combines light weight with strong tensile strength for season-long performance in summer and light weather.
• High UV blockage: Blocks up to 95% of UV exposure to help keep shaded areas cooler and protect skin and surfaces.
• Versatile outdoor use: Designed for patios, pools, driveways, carports and gardens where shading, ventilation and some rain resistance are needed.
• Custom orders and warranty: Available to be customized and backed by a 3-Year Limited Warranty for added confidence.

Who It's For

This shade sail is best for homeowners and renters who want a straightforward, effective way to add shade over a pool, patio, driveway or seating area without a permanent structure. It suits DIY installers who appreciate that the sail is measured corner to corner and shaped to remain taut once mounted.

People who need complete waterproof protection or who require a rigid permanent awning should look elsewhere, since this is a fabric sail designed primarily for shading, ventilation and light weather resistance rather than full stormproofing.

Pros & Cons

Pros

• Blocks up to 95% of UV rays for effective sun protection and cooler shaded areas.
• Curved edge design and corner-to-corner measurement reduce mid-span sag and give a neat appearance.
• Lightweight virgin polyethylene offers strong tensile performance and easy handling during installation.
• Customizable sizes and a 3-Year Limited Warranty add flexibility and reassurance.

Cons

• Only slightly rainproof in heavy storms, so not a substitute for a hard-roofed shelter.
• Included hardware receives mixed feedback, so budget for higher-grade fittings if mounting in exposed sites.

Specifications

Product type	Right triangle shade sail
Dimensions	11' x 21' x 23.7'
Color	Green
Material	Virgin polyethylene
UV blockage	Up to 95%
Visibility blockage	About 90%
Warranty	3-Year Limited Warranty

Our Verdict

The 11' x 21' x 23.7' green right triangle shade sail is a sensible value for homeowners who need effective sun protection with a tidy, sag-resistant installation. Its durable polyethylene fabric, deliberate curved edges and corner-to-corner sizing deliver reliable shade and ventilation, while the option for customization and a 3-Year Limited Warranty make it a practical long-term choice for patios, pools and carports.

Frequently Asked Questions

How is this sail sized?
Measurements are taken from corner to corner and the edges are made slightly curved so the installed sail remains taut.

Will it keep rain out?
The sail is slightly rainproof for light showers but is not intended as a full waterproof solution for heavy storms.

Is hardware included?
Some hardware is included, but customer feedback is mixed so stronger fittings may be advisable for exposed or high-wind locations.