9ft x 15ft x 17.5ft Gray Right Triangle Sun Shade Sail - Cool, UPF50

In this review the 9' x 15' x 17.5' gray right triangle shade sail is evaluated for backyard and commercial use; it stands out for its 95% sun protection and customizable fit. The bottom line: anyone needing a sizable, breathable cover that noticeably lowers temperature will appreciate this sail, because it balances strong UV blockage with air and water permeability and comes ready for order-to-make custom sizing. Installation needs planning, but the sail's reinforced edges and stainless D-rings make it a durable choice for patios, play areas, and outdoor dining.

Key Features

• 95% UV blockage: The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays, offering reliable sun protection for people and furnishings.
• Temperature reduction: Users can expect surface temperatures to be up to 15 degrees lower under the sail, making outdoor time more comfortable on hot days.
• Breathable, water permeable: The weave allows air and some water to pass through, reducing wind load and pooling while maintaining shade.
• Customizable sizing: The sail is made to order from D-ring to D-ring so it can be tailored to irregular or exact spaces for a cleaner fit.
• Reinforced construction: Stainless steel D-rings, double-layer stitching and reinforced edges improve long-term performance in regular outdoor conditions.
• Commercial standard: Built to commercial standards with a 3-year assurance for confidence in heavier-use installations.

Who It's For

The sail is best for homeowners, small-business operators, and community spaces wanting a robust shade solution that reduces heat and blocks most UV without creating a sealed canopy. It suits patios, playgrounds, poolside lounging and outdoor dining where a tailored triangular shade is needed.

It may be less appropriate for buyers who need a fully waterproof canopy or those who expect multi-year, maintenance-free wear in extreme UV exposure without occasional replacement; some users report varied long-term durability in very harsh sun conditions.

Pros & Cons

Pros

• Excellent sun protection due to high-density 200 GSM HDPE and 95% UV blockage.
• Noticeable cooling effect, lowering surface temperatures by up to 15 degrees.
• Custom sizing and reinforced hardware make installation adaptable and sturdy.
• Breathable design reduces wind uplift and water pooling compared with solid tarps.

Cons

• Longevity can vary in intense sun; some users report shorter lifespans compared with occasional long-term reports.
• Requires careful measuring and planning for secure attachment and best tensioning.

Specifications

Shape	Right triangle
Size (D-ring to D-ring)	9' x 15' x 17.5'
Material	200 GSM HDPE
UV protection	Up to 95% blockage (UPF50+)
Permeability	Water and air permeable
Hardware	Stainless steel D-rings, reinforced edges
Warranty	3-year assurance

Our Verdict

The 9' x 15' x 17.5' gray right triangle shade sail is a practical, value-oriented option for anyone wanting strong sun protection and cooler outdoor spaces with the flexibility of custom sizing. It pairs commercial-grade construction and breathable fabric to suit patios and communal areas, though buyers in extreme UV climates should plan for eventual replacement.

Frequently Asked Questions

Is this shade sail waterproof?
Not fully; it is water permeable to avoid pooling, so light rain will pass through rather than bead off as with a waterproof tarp.

How should I measure for a custom fit?
Measure corner to corner from D-ring to D-ring where the sail will be tensioned and allow at least 0.5 ft gap to mounting points; adjust down by 1 to 1.5 ft per side if needed for final tension.

Will it resist wind?
The breathable HDPE weave reduces wind load compared with solid fabrics, and reinforced edges with stainless D-rings improve resistance when installed with proper tension.