21ft x 22ft Grey Sun Shade Sail UPF50 Rectangle - Heavy Duty Sun

Our review of the ShadeMart 21' x 22' grey rectangle sun shade sail finds it best for homeowners and RV owners who need broad, breathable UV protection with a durable build. The biggest reason to buy is the combination of woven HDPE fabric and stainless steel corner D rings, which together deliver a sturdy, weather-tolerant canopy that blocks up to 95% of UV while remaining water and air permeable. Installation is straightforward with proper hardware, and the sail lowers temperatures noticeably under bright sun.

Key Features

• Woven HDPE fabric: provides a durable, breathable canopy that lets water and air pass through while reducing sun exposure.
• Stainless steel D rings: attached to heavy duty white webbing for reliable anchoring and longer hardware life near outdoor elements.
• High UV protection: blocks up to 95% of harmful UV rays, helping to lower temperatures by 10 to 15 degrees beneath the sail.
• Rectangle styling: offers a clean, versatile look that integrates with patios, carports, pergolas, and pool areas to enhance outdoor design.
• Custom sizing available: a wide selection of sizes lets you match specific venues, provided measurements are taken accurately.
• Water and air permeable: the nonwaterproof weave prevents pooling and reduces wind load compared with solid tarps.

Who It's For

The ShadeMart rectangle shade sail is ideal for homeowners, RV owners, and small businesses who want a large, breathable canopy that reduces heat and blocks intense sunlight while staying ventilated. It suits patios, carports, pergolas, poolside areas, and yards where a decorative but functional shade solution is needed.

It is less suitable for anyone who needs a fully waterproof cover or exact color matching at all times; customers should measure carefully because manual measurements can cause slight dimension variation, and color may look different under varied light.

Pros & Cons

Pros

• Durable woven HDPE fabric that resists fading and holds up in strong winds when properly installed.
• Stainless steel corner D rings and heavy duty webbing for secure attachment points.
• Excellent sun protection that can lower temperatures by roughly 10 to 15 degrees in shaded areas.

Cons

• Not waterproof, so it will not keep areas dry in steady rain.
• Color and exact size reports are mixed by customers, so expect small variations from the listing.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	21' x 22'
Material	Woven HDPE (High Density Polyethylene)
Hardware	Stainless steel corner D rings on heavy duty webbing
Function	Water and air permeable, UPF50, blocks up to 95% UV

Our Verdict

This ShadeMart 21' x 22' rectangle shade sail is a practical buy for those who want strong UV defense, airflow, and a durable installation at a reasonable value. It is particularly good for shading vehicles, patios, and pool areas, but buyers who need a waterproof cover or exact color fidelity should consider other options.

Frequently Asked Questions

Is this shade sail waterproof?
No. The sail is water permeable and breathable, so it will not keep rain out but prevents pooling and vents wind.

Can it be attached to trees or poles?
Yes. With the proper hardware kit it can be mounted to poles, trees, walls, roofs, and other structures.

Will it block UV rays effectively?
Yes. The fabric blocks up to 95% of harmful UV rays and helps lower temperatures beneath the canopy.