Custom Size 18ft x 20ft x 26.9ft Right Triangle Sun Shade Sail - Heavy

Our review of this custom right triangle shade sail finds it best suited for homeowners and small commercial spaces that need a tailored sun coverage solution. The single biggest reason to buy is its effective sun protection: made from 200 GSM HDPE and rated to block up to 95% of UV, it noticeably cools shaded areas and is built to last with reinforced edges and stainless steel D-rings. Installation requires planning and correct measurements from D-ring to D-ring, but the customizable sizing makes it a practical choice where a made-to-order fit matters.

Key Features

• 95% UV blockage: The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays so shaded areas stay safer and sun exposure is greatly reduced.
• Temperature reduction: The sail lowers ambient temperature under the canopy by up to about 15 degrees compared to unshaded spots, making outdoor time more comfortable.
• Customizable fit: Measurements are taken from D-ring to D-ring so the sail can be made to match irregular layouts and special install points.
• Durable construction: Reinforced edges, double-layer stitching and stainless steel D-rings increase longevity and resist fraying under regular use.
• Easy and flexible installation: The sail can be attached to trees, roofs, walls or poles and works with standard mounting hardware kits for a variety of mounting options.
• Commercial standard and assurance: Built to commercial standard and backed by a 3 year assurance for added buyer confidence.

Who It's For

This shade sail is ideal for people who need a made-to-order shape and size, such as odd-angle patios, playgrounds, animal enclosures, or restaurant terraces where a right triangle fit is required. It suits DIY installers who can measure from D-ring to D-ring and plan anchor points a half foot or more from corners.

Those who should look elsewhere include buyers wanting a ready-to-install off-the-shelf square or rectangle without custom sizing, or anyone unwilling to verify precise measurements before ordering. Also, if extremely small coverage is expected from the listed dimensions, verify fit since customers sometimes report it feels smaller than anticipated.

Pros & Cons

Pros

• High sun protection from 200 GSM HDPE fabric that blocks up to 95% of UV rays.
• Durable details like stainless steel D-rings and double-layer stitching increase lifespan.
• Custom sizing allows a tailored fit for awkward or unique outdoor spaces.
• Noticeable cooling effect that can reduce temperatures under the sail by up to 15 degrees.

Cons

• Requires accurate D-ring to D-ring measurement and planning for installation, which may be tricky for some users.
• Some customers report the finished sail appears smaller than expected, so careful measuring and communication with the maker is important.

Specifications

Shape	Right triangle
Custom size (example)	18' x 20' x 26.9'
Fabric	200 GSM HDPE
UV protection	Up to 95% blockage (UPF50+)
Hardware	Stainless steel D-rings, reinforced edges
Permeability	Water and air permeable
Assurance	3 year assurance included

Our Verdict

For anyone needing a heavy duty, made-to-measure right triangle shade sail, this model delivers strong sun protection and durable construction at a sensible value. It is especially good where precise fitting and long-term performance matter, provided buyers measure carefully and accept that custom sails can look smaller than expected once installed.

Frequently Asked Questions

How much UV protection does this sail provide?
The fabric is 200 GSM HDPE and is designed to block up to 95% of UV rays, offering UPF50+ level protection.

Can it be installed on trees and walls?
Yes, the sail is flexible for attachment to trees, roofs, walls or poles using appropriate mounting hardware; leave recommended spacing from D-rings to anchors when planning.

Is the sail waterproof?
No, it is water and air permeable by design, which helps reduce wind load and avoids pooling while providing shade.