Custom Size 11ft x 21ft x 23.7ft Green Right Triangle Sun Shade Sail

Our review looks at the Custom Size 11' x 21' x 23.7' Green Right Triangle Sun Shade Sail, a tailored canopy aimed at homeowners and small businesses who need precise coverage and solid sun protection. The main reason to consider this shade sail is its combination of heavy-duty 200 GSM HDPE fabric and a customizable, D-ring-to-D-ring measurement system that delivers reliable 95% sun protection and a significantly cooler shaded area. It suits patios, play areas, and outdoor seating where accurate fit and long-term durability matter.

Key Features

• 95% UV blockage: The fabric blocks up to 95% of harmful UV rays to protect skin and outdoor furnishings from sun damage.
• 200 GSM HDPE construction: The heavier, commercial-grade material improves durability and resists fraying under regular outdoor exposure.
• Temperature reduction: Designed to lower shaded area temperatures by up to 15 degrees compared to unshaded spots, making outdoor time more comfortable.
• Custom D-ring sizing: Measured from D-ring to D-ring for a tailored fit so the sail can cover odd-shaped spaces with minimal gaps.
• Reinforced hardware: Stainless steel D-rings and double-layer stitching add strength at stress points for longer service life.
• Air and water permeable: The weave lets air and some water pass through, reducing wind lift and pooling during light rain.

Who It's For

This shade sail is best for homeowners, renters with permission to anchor to structures, and small commercial spaces that need a custom-sized canopy rather than off-the-shelf rectangles. It works well over patios, playgrounds, and seating areas where a precise right-triangle fit of approximately 11' x 21' x 23.7' is required.

It is less suitable for anyone expecting a fully waterproof awning or those who cannot secure at least three stable anchor points with the recommended spacing. Customers who want a rigid, permanent roof solution should look elsewhere.

Pros & Cons

Pros

• High sun-blocking performance that protects people and furniture from UV exposure.
• Heavy 200 GSM fabric and reinforced stitching give a sense of long-term durability noted by users.
• Custom measurement from D-ring to D-ring allows a precise fit for awkward spaces.
• Stainless steel D-rings and commercial construction handle wind and sun well.

Cons

• Not designed as a fully waterproof canopy, since it is air and water permeable.
• Some buyers report the final size can feel smaller than expected if measurements are off, so careful measuring is essential.

Specifications

Shape	Right triangle
Size (approx)	11' x 21' x 23.7'
Material	200 GSM HDPE
UV Protection	UPF50+ / 95% blockage
Hardware	Stainless steel D-rings, reinforced edges
Permeability	Water and air permeable
Assurance	3 years

Our Verdict

The Custom Size 11' x 21' x 23.7' Green Right Triangle Sun Shade Sail is a sensible purchase for anyone who needs a tailored, durable shade solution with strong UV protection. Its commercial-grade 200 GSM fabric, reinforced hardware, and customizable sizing deliver good long-term value for patios and outdoor seating where accurate coverage and heat reduction are priorities.

Frequently Asked Questions

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

How should I measure for a custom fit?
Measure from D-ring to D-ring at each corner and leave at least 0.5 ft gap between D-rings and poles, reducing by 1 to 1.5 ft per side if needed for tension.

How durable is the hardware?
It includes stainless steel D-rings and double-layer stitching at edges, which customers report hold up well under sun and wind.