11 ft x 20 ft x 22.8 ft White Right Triangle Sun Shade Sail - Durable

In this review of the 11' x 20' x 22.8' white right triangle sun shade sail from SHADESPEARE, the bottom line is simple: it suits homeowners who need a strong, lightweight shade solution that blocks most UV and maintains a tidy, tensioned look. The reviewer found the single biggest reason to buy is the sail's engineered curved edges and tensile virgin polyethylene fabric, which together prevent mid-panel sagging while offering up to 95% UV blockage and good airflow for cooling. This makes it practical for patios, poolsides, carports and similar outdoor spaces.

Key Features

• Measurement method: Sizes are taken corner to corner so buyers know the sail covers the intended span when measured correctly.
• Curved edge design: Precisely calculated radian curves on the edges reduce sagging and keep the canopy taut for a neater appearance and better water run-off.
• Material strength: Made from virgin polyethylene, the fabric is lightweight yet strong, offering reliable tensile strength for outdoor tensioning.
• UV and visibility reduction: Blocks up to 95% of UV and about 90% of visibility, improving comfort and sun protection in hot weather.
• Seasonal performance: Provides shading, ventilation and cooling in summer, with minor rain resistance and some frost protection at night.
• Warranty and customization: Comes with a 3-year limited warranty and options for custom orders to fit nonstandard spaces.

Who It's For

The sail is best for homeowners and renters who need a durable, high-coverage shade for a backyard, pool area, driveway or patio and who can install anchor points to tension the sail properly. It is a practical choice for those wanting strong UV protection and airflow without a heavy permanent structure.

It is less suitable for buyers who need a fully waterproof canopy for extended heavy rain, or for those who cannot provide secure attachment points; in those cases a rigid or fully waterproof awning would be a better option.

Pros & Cons

Pros

• High UV blockage and good visibility reduction keep outdoor areas noticeably cooler.
• Curved edges and correct corner-to-corner sizing prevent mid-panel sagging for a tidy look.
• Lightweight virgin polyethylene fabric balances tensile strength with ease of handling during installation.
• 3-year limited warranty and available custom orders add flexibility and peace of mind.

Cons

• Hardware included receives mixed feedback, so buyers may need to upgrade fittings for long-term installations.
• Only slightly rainproof, not intended as a full waterproof shelter in heavy downpours.

Specifications

Shape	Right triangle
Size (corner to corner)	11' x 20' x 22.8'
Color	White
Material	Virgin polyethylene
UV blockage	Up to 95%
Visibility reduction	About 90%
Warranty	3-Year Limited Warranty

Our Verdict

This right triangle shade sail is a solid value for anyone who needs effective sun protection and a neat, tensioned canopy without building a permanent structure. The engineered curved edges and robust polyethylene material make it durable and simple to handle, and the 3-year warranty plus customization options add practical benefits for most residential outdoor uses.

Frequently Asked Questions

How should I measure for this sail?
Measure corner to corner for the three sides, matching the product dimensions; the edges are slightly curved so corner-to-corner measurement gives the best fit.

Is the sail waterproof?
The fabric is slightly rainproof but not fully waterproof; it provides limited rain resistance but is intended mainly for shade and ventilation.

Does hardware come with the sail?
Some hardware is included, but customer feedback is mixed so consider higher-grade fittings for permanent or high-tension installations.