Right Triangle 12 ft x 17 ft x 20.8 ft Red Shade Sail - Tight, Durable

Our review of this right triangle shade sail looks at who will benefit most and why it stands out. Meant for patios, play areas and yard corners, the sail is a custom-size, heavy duty mesh that blocks up to 95% of harmful UV while still allowing air and water to pass through. The single biggest reason to buy is its construction: 200 GSM HDPE fabric with reinforced edges and stainless D rings that keep the sail taut and resistant to sagging, so it performs well over time in sunny, exposed locations.

Key Features

• Custom measurement: Corners are measured corner-to-corner and edges are cut slightly curved so the sail pulls tight and reduces mid-span sag after installation.
• Durable material: Made from 100% 200 GSM HDPE fabric that blocks up to 95% of UV while remaining breathable to prevent water pooling and reduce wind load.
• Finished edges: Heavy duty double-layer stitched seams stop fraying and help the sail retain shape under tension and weather.
• Reinforced corners: Stainless D rings with extra stitched seams at each corner simplify installation and increase long-term strength at anchor points.
• 3 year warranty: Manufacturer-backed warranty against UV degradation gives confidence for normal weather exposure.

Who It's For

This shade sail is best for homeowners or small businesses who need a large, triangular shade solution for patios, playgrounds or pet areas and want a product that resists fading and sagging. It works well where existing poles, walls or trees can be used as attachment points and where breathable fabric is desirable to avoid water pooling.

Those looking for a lightweight decorative awning or a fully waterproof cover should look elsewhere, since the knitted HDPE fabric is designed to breathe and drain rather than be a waterproof canopy. If exact straight edges are required instead of the standard curved-edge fit, a custom order is suggested.

Pros & Cons

Pros

• High UV protection with breathable 200 GSM HDPE fabric that reduces heat while allowing airflow.
• Sturdy construction: double-stitched edges and reinforced corners with stainless D rings improve durability and installation security.
• Pre-curved edges and corner-to-corner measurement help the sail tension evenly and minimize sag for a neater appearance.

Cons

• The knitted, breathable material is not waterproof, so it will not provide full rain protection in heavy downpours.
• Size expectations vary among buyers, so measuring the intended shaded area carefully is important before ordering.

Specifications

Product type	Right triangle shade sail
Size	12 ft x 17 ft x 20.8 ft (corner-to-corner measurement)
Material	100% 200 GSM HDPE woven knitted fabric
UV protection	Blocks up to 95% of harmful UV
Hardware	Stainless D rings at each corner; adjustable turnbuckles recommended
Edges	Double-layer reinforced stitched seams; slightly curved edges for tension
Warranty	3 years UV degradation warranty

Our Verdict

For anyone after a durable, well-fitting triangular shade that prioritizes UV protection and long-term shape retention, this 200 GSM HDPE sail is a sensible, value-oriented choice. Its reinforced corners and pre-curved edges produce a tidy installation and the 3 year warranty adds reassurance, but buyers should accept that the material is breathable rather than waterproof and confirm dimensions before ordering.

Frequently Asked Questions

Will this sail stop rain?
The knitted HDPE fabric is breathable and allows water to pass through, so it reduces dripping but does not provide full waterproof coverage in heavy rain.

How are sizes measured?
Measurements are taken from corner to corner and edges are slightly curved to create tension and prevent sagging after installation.

Are attachment points included?
The sail has stainless D rings at each corner; hardware kits are recommended and sold separately to maximize performance and appearance.