12ft x 17ft x 20.8ft Red Right Triangle Sun Shade Sail - 95% UV Block

In this review the focus is on a custom-size right triangle shade sail that promises serious sun protection for patios, play areas, and decks. The bottom line: this sail is for anyone who needs a tailored, durable shade solution that blocks up to 95% of UV and cuts ambient temperature by up to 15 degrees. The reviewer found it best for semi-permanent outdoor coverage where a water- and air-permeable fabric and reinforced mounting points are important; installation requires basic hardware and some planning for proper D-ring spacing.

Key Features

• 95% UV protection: The 200 GSM HDPE fabric blocks most harmful UV rays so shaded areas feel safer for prolonged outdoor use.
• Temperature reduction: The sail can lower temperatures by up to 15 degrees compared with unshaded spots, making patios and play areas noticeably cooler.
• Custom sizing: Measurements are taken D-ring to D-ring so the sail can be made to fit irregular spaces and achieve a neat, tailored install.
• Durable construction: Stainless steel D-rings, reinforced edges and double-layer stitching resist fraying and support heavier tension at attachment points.
• Permeable and weather-ready: The weave allows air and water to pass through so the sail reduces heat without pooling water during rain.
• Easy installation guidance: The sail installs to trees, roofs, walls or poles and includes recommended gaps to avoid over-tensioning at corners.

Who It's For

This shade sail is ideal for homeowners, commercial patios, daycare outdoor spaces, and anyone who wants a custom-sized shade that integrates with existing posts, walls, or mature trees. The tailored D-ring measurement method makes it a good choice when standard square or rectangular sails do not fit the required coverage area.

It is less suited to customers who need a temporary pop-up solution or expect no maintenance; while the fabric is sturdy, extended exposure in harsh sun has produced mixed longevity reports, so those wanting multi-year worry-free use in extreme UV conditions should plan for occasional replacement or closer inspection.

Pros & Cons

Pros

• Excellent sun protection with up to 95% UV blockage for safer outdoor time.
• Noticeable cooling effect, reducing temperature by up to 15 degrees in shaded areas.
• Solid hardware and reinforced stitching give a robust feel once installed.
• Custom sizing and straight-edge options allow a tidy, fitted look for irregular spaces.

Cons

• Durability varies with heavy sun exposure; some users report degradation after a year to 18 months.
• Installation needs planning for correct D-ring gaps and suitable anchor points, which may require extra hardware or professional help.

Specifications

Shape	Right triangle
Size	12 ft x 17 ft x 20.8 ft
Material	200 GSM HDPE
UV Blockage	Up to 95%
Permeability	Water and air permeable
Hardware	Stainless steel D-rings with reinforced edges
Assurance	3 year assurance included

Our Verdict

This custom-size right triangle shade sail is a practical, cost-effective way to add strong sun protection and cooler shade to patios, playgrounds, and commercial seating areas. With heavy-duty D-rings, reinforced stitching and a breathable 200 GSM HDPE weave, it offers a tailored fit and good value, though buyers in very high-UV climates should monitor wear and expect possible replacement after extended exposure.

Frequently Asked Questions

Can this sail be trimmed or adjusted on site?
Answer: The sail is made to order from D-ring to D-ring for a tailored fit; request straight edges or other custom options when ordering rather than trimming after delivery.

Will rain pool on the fabric?
Answer: No, the 200 GSM HDPE fabric is water and air permeable so it resists pooling and allows airflow while still providing shade.

How close should D-rings be to anchor poles?
Answer: For optimal performance allow at least 0.5 ft gap between D-Rings and poles, or reduce by 1 to 1.5 ft per side if needed during installation.