11ft x 17ft x 20.2ft Black Right Triangle Shade Sail - 95% UV Block

In this review of the 11' x 17' x 20.2' black right triangle shade sail, the bottom line is simple: this is a practical sun protection choice for homeowners and small businesses who need a large, customizable canopy that blocks the majority of UV light. The reviewer found it best for patios, play areas, and outdoor seating where reducing heat and sun exposure matters most. Its standout feature is 95% sun protection, combined with a heavy 200 GSM HDPE fabric that balances shade, airflow and longevity.

Key Features

• 95% UV blockage: The fabric blocks up to 95% of harmful UV rays to protect skin and furnishings while creating comfortable shade.
• 200 GSM HDPE construction: The dense weave offers strength and tear resistance for regular outdoor use in sun-exposed settings.
• Temperature reduction: The sail can reduce ambient temperature by up to 15 degrees compared with unshaded areas, making patios noticeably cooler.
• Customizable fit: Measurements are made D-ring to D-ring so the sail can be tailored to fit irregular mounting points or to request straight edges.
• Premium hardware and stitching: Stainless steel D-rings, reinforced edges and double-layer stitching improve durability and help prevent fraying.
• Water and air permeable: The material sheds some water while allowing airflow, reducing wind load and pooling on the canopy surface.

Who It's For

Ideal buyers are homeowners, small cafes, or community spaces that need a large triangular shade solution that can be tailored to specific mounting points. People who value effective sun protection and want a cooler outdoor area for gatherings will appreciate the combination of heavy-duty fabric and adjustable installation.

Those looking for a decorative umbrella alternative or a semi-permanent awning will find this sail appropriate, but buyers who need a fully waterproof roof or expect extreme long-term exposure without occasional maintenance should consider other hard-top solutions.

Pros & Cons

Pros

• High sun protection blocks up to 95% of UV, reducing sun risk and glare.
• Solid build quality with 200 GSM HDPE, stainless steel D-rings, and reinforced edges for improved life.
• Cooling effect lowers ambient temperature by up to 15 degrees, increasing outdoor comfort.
• Custom measurement and edge options allow a better fit for nonstandard spaces.

Cons

• Durability reports are mixed under continuous strong sun exposure, so longevity may vary by climate and care.
• Not fully waterproof; it is water permeable so it does not provide complete rain protection like a solid canopy.

Specifications

Shape	Right triangle
Size	11' x 17' x 20.2'
Color	Black
Material	200 GSM HDPE
UV Protection	Up to 95% blockage
Hardware	Stainless steel D-rings, reinforced edges
Permeability	Water and air permeable

Our Verdict

The 11' x 17' x 20.2' black right triangle shade sail is a good value for those who need reliable UV protection and cooler outdoor spaces without a complex installation. It combines heavy-duty fabric, solid hardware and customization options to fit awkward spaces, although buyers in very harsh sun climates should plan for occasional replacement or extra care.

Frequently Asked Questions

Is this shade sail waterproof?
The sail is water and air permeable, so it sheds some water but is not a fully waterproof canopy.

How are measurements taken for a custom fit?
Measurements are taken from D-ring to D-ring; provide precise D-ring distances to ensure a tailored fit or request straight edges if preferred.

What kind of mounting points work?
It can be attached to trees, roofs, walls or poles using a mounting kit; leave at least 0.5 ft gap at corners or adjust spacing by 1 to 1.5 ft per side for tension.