9ft x 15ft x 17.5ft Black Right Triangle Sun Shade Sail - 95% UV
9ft x 15ft x 17.5ft Black Right Triangle Sun Shade Sail - 95% UV
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In this review of the 9' x 15' x 17.5' black right triangle sun shade sail, the bottom line is simple: it is a practical, heavy-duty option for anyone who needs reliable UV protection and temperature reduction for patios, play areas, or run spaces. The sail's strongest pull is its 95% sun protection from 200 GSM HDPE fabric, which makes it a good choice for homeowners and small commercial settings who want shade that stands up to heat and regular outdoor use. Installation is straightforward for those comfortable measuring D-ring to D-ring and planning anchor points, and the customizable sizing ensures a closer fit than off-the-shelf squares.
Key Features
- 95% UV blockage: The 200 GSM HDPE material blocks up to 95% of harmful UV rays so shaded areas stay safer for people and pets.
- Temperature reduction: The sail can lower shaded temperatures by up to 15 degrees compared with unshaded spots, making outdoor time noticeably more comfortable.
- Water and air permeable: The fabric sheds some sun while allowing airflow and water to pass, which reduces wind load and pooling compared with solid covers.
- Durable construction: Stainless steel D-rings, reinforced edges and double-layer stitching prevent fraying and extend life under regular use.
- Custom fit: The product is made to order from D-ring to D-ring so it can match unusual spaces and the manufacturer will work on straight-edge requests.
- Three-year assurance: A 3-year assurance provides added confidence in the sail's build quality for everyday outdoor exposure.
Who It's For
This shade sail is best for homeowners, small businesses, or hobby farms needing a tailored triangular cover for patios, playgrounds, chicken runs, or seating areas where strong UV protection and cooler shade matter. It suits people who can measure and plan anchor points or who can work with a handyman to install the sail securely.
Those who should look elsewhere include buyers who need a pre-sized square or circular cover without custom ordering, or anyone unwilling to allow a small gap at each corner (recommended 0.5 ft) for optimal tension and drainage. If the exact visible footprint is critical, order careful measurements since customers sometimes report the product looks smaller than expected.
Pros & Cons
Pros
- High sun protection blocks up to 95% of UV for safer outdoor use.
- Fabric reduces ambient temperature by around 15 degrees in shaded areas.
- Sturdy details like stainless steel D-rings and reinforced stitching improve longevity.
- Made-to-order sizing allows a better fit in awkward or custom spaces.
Cons
- Some buyers note the finished sail can appear smaller than expected, so precise D-ring measurements are essential.
- Installation requires planning and anchors; casual users may need help to mount it correctly.
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/Assurance | 3-year assurance included |
Our Verdict
The 9' x 15' x 17.5' right triangle shade sail is a solid, value-oriented choice when you need dependable UV protection and cooler shade in a custom dimension. It is particularly worthwhile for anyone prepared to measure anchor points and install a tailored sail, offering durability and useful temperature reduction for patios, play areas, and small commercial uses.
Frequently Asked Questions
Will this sail block most sunlight?
Yes. The 200 GSM HDPE fabric is designed to block up to 95% of UV rays for strong sun protection.
Can it handle rain and wind?
The fabric is water and air permeable to reduce pooling and wind stress, but proper tensioning and secure anchors are important for windy conditions.
How should I measure for a custom fit?
Measure from D-ring to D-ring at the intended anchor points and leave at least 0.5 ft gap between D-rings and poles as recommended for best performance.
Editor's Take
The 9' x 15' x 17.5' right triangle shade sail is a durable, made-to-order option that blocks up to 95% of UV and lowers shaded temperatures, ideal for patios and small commercial spaces when measured and installed correctly.

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