Custom Size 13ft x 21ft x 24.7ft Red Right Triangle Sun Shade Sail

Our review of this custom size right triangle shade sail finds it best suited for homeowners and light-commercial spaces that need a tailored sun barrier. The single biggest reason to buy is the combination of custom sizing with a heavy 200 GSM HDPE fabric that offers up to 95% sun protection, making it a practical choice when fixed umbrellas or pergolas do not fit the area. Installation is flexible, and the sail's reinforced edges and stainless steel D-Rings promise a more durable canopy than thin, off-the-shelf alternatives.

Key Features

• 95% UV blockage: The 200 GSM HDPE material blocks up to 95% of harmful UV rays to protect people and furniture beneath the sail.
• Temperature reduction: The woven fabric lowers ambient temperature by as much as 15 degrees compared with unshaded areas for noticeably cooler outdoor use.
• Custom sizing: Measurements are taken D-ring to D-ring for a tailored fit, so the sail can cover awkward or nonstandard spaces accurately.
• Durable construction: Reinforced edges, double-layer stitching and stainless steel D-Rings add strength and resist fraying under regular use.
• Breathable and water permeable: The weave sheds some water and allows air flow, reducing wind load and pooling compared with solid tarpaulins.
• Flexible mounting: Can be attached to trees, roofs, walls or poles and works with common mounting hardware kits for varied installation layouts.

Who It's For

This shade sail is ideal for homeowners with patios, play areas or poolside spots that need a custom-shaped cover and for small businesses seeking a commercial-standard canopy with strong UV protection. The tailored D-ring to D-ring sizing makes it useful where exact dimensions are required or when multiple sails are combined to cover irregular spaces.

It is less appropriate for buyers who need a fully waterproof awning or for installations exposed to extreme weather year-round; the fabric is water and air permeable by design. Those wanting a rigid, permanent roof should consider hard-structure alternatives.

Pros & Cons

Pros

• High UV protection that blocks up to 95% of sunlight for safer outdoor use.
• Custom D-ring to D-ring sizing ensures a good fit for nonstandard areas.
• Sturdy build with reinforced edges, double stitching and stainless steel D-Rings.
• Reduces temperature beneath the sail, improving outdoor comfort.

Cons

• Durability reports are mixed over long-term sun exposure; some users noted fading or wear after more than a year.
• Not fully waterproof, so it will not keep rain out like a solid awning.

Specifications

Shape	Right triangle
Size	13' x 21' x 24.7'
Material weight	200 GSM HDPE
UV protection	Up to 95% blockage
Mounting	Stainless steel D-Rings, reinforced edges
Permeability	Water and air permeable
Warranty/assurance	3 years assurance

Our Verdict

The custom right triangle shade sail is a solid value for anyone needing tailored sun protection without building a permanent structure. Its 95% UV protection, temperature reduction and reinforced hardware make it a practical solution for patios and small commercial areas, though buyers should expect some wear over multiple seasons and not treat it as a waterproof roof.

Frequently Asked Questions

How are sizes measured?
Sizes are measured D-ring to D-ring, so provide the exact corner-to-corner distances for a proper custom fit.

Is the sail waterproof?
No, the fabric is water and air permeable; it sheds some water but is not a fully waterproof awning.

What mounting hardware is needed?
It works with common mounting hardware kits and requires anchor points such as poles, walls, roofs or trees, with at least a 0.5 ft gap recommended between D-Rings and poles for best tensioning.