11ft x 16ft x 19.4ft Black Right Triangle Sun Shade Sail - UV Block

In this review of the 11' x 16' x 19.4' black right triangle sun shade sail, the bottom line is simple: it is for homeowners who need reliable sun and heat reduction for patios, pools, driveways or carports without a heavy permanent structure. The reviewer found the sail's standout feature is its measured corner-to-corner sizing with slightly curved edges, which keeps the fabric taut and prevents sagging for a clean, durable installation. This makes it a practical option for seasonal shading where strong UV blockage and lightweight material matter.

Key Features

• Corner-to-corner measurement: The sail is measured from corner to corner and the edges are curved to maintain tension and prevent middle sagging for a neater appearance.
• High UV protection: Constructed from virgin polyethylene, it blocks up to 95% of UV rays, helping keep shaded areas noticeably cooler.
• Visibility reduction: Offers about 90% visibility blockage so it provides substantial sun coverage and privacy in outdoor spaces.
• Lightweight and strong: The material has good tensile strength while remaining light enough for easier handling and installation by two people.
• All-season benefits: Designed to provide shading and ventilation in summer, some frost protection at night, and slight rain resistance during wet periods.
• Custom and warranty support: Available for custom orders and backed by a 3-Year Limited Warranty for added assurance.

Who It's For

This shade sail is well suited for homeowners with a backyard pool, patio, balcony, or carport who want a removable but tidy shading solution. It is especially useful for people who need a shaped sail that holds tension well among trees or between posts, where sagging is a common annoyance.

It may be less suitable for buyers who require full waterproofing or a rigid permanent structure; customers needing complete rainproofing or a built-in canopy should consider a solid-roof option. Those who need a very small or exact custom shape should inquire about the custom-order option before purchase.

Pros & Cons

Pros

• Excellent sun protection and cooling thanks to up to 95% UV blockage.
• Curved edges and corner-to-corner sizing reduce sagging and keep a tidy look once installed.
• Durable virgin polyethylene offers good tensile strength and light weight for easier handling.
• Available customization and a 3-Year Limited Warranty add flexibility and peace of mind.

Cons

• Hardware included receives mixed reviews, so buyers may want to verify mounting accessories for their setup.
• Only slightly rainproof, so it is not a substitute for full rain protection in prolonged wet weather.

Specifications

Shape	Right triangle
Measurements (corner to corner)	11' x 16' x 19.4'
Color	Black
Material	Virgin polyethylene
UV blockage	Up to 95%
Visibility blockage	Around 90%
Warranty	3-Year Limited Warranty

Our Verdict

The 11' x 16' x 19.4' right triangle shade sail is a practical, good-value choice for anyone needing strong sun protection and a tidy installation without building a permanent structure. With high UV blockage, curved edges to avoid sagging, and a lightweight yet durable fabric, it suits patios, pools, and driveways; confirm mount hardware for your installation and do not expect full waterproofing.

Frequently Asked Questions

Does the sail prevent sagging?
The manufacturer measures corner-to-corner and uses slightly curved edges calculated to keep tension and prevent sagging when properly installed.

How much UV protection does it provide?
The shade sail is made of virgin polyethylene and provides up to 95% UV blockage for significant sun and heat reduction.

Is it waterproof?
The fabric is slightly rainproof but not fully waterproof; it performs best for sun protection, ventilation, and light rain resistance.