Custom Size 18ft x 20ft Blue Rectangle Sun Shade Sail - 95% UV

In this review of the Custom Size 18' x 20' Blue Rectangle Sun Shade Sail, the bottom line is simple: this is a practical, heavy duty shade solution for homeowners and small businesses that need reliable sun protection and a cooler outdoor area. The reviewer found the sail's 95% UV blockage and 200 GSM HDPE construction to be the most compelling reason to buy, since it noticeably reduces temperature and holds up under windy conditions while remaining reasonably easy to install when measured and mounted correctly.

Key Features

• 95% Sun Protection: The shade sail blocks up to 95% of harmful UV rays, providing safer sun exposure for patios and play areas.
• 200 GSM HDPE Material: Constructed from heavy duty fabric, the sail resists tearing and maintains shape through regular outdoor use.
• Temperature Reduction: The canopy can lower ambient temperature by up to 15 degrees compared to unshaded areas, improving comfort on hot days.
• Stainless Steel D-Rings & Reinforced Edges: Hardware and double-layer stitching add durability and help prevent fraying at attachment points.
• Custom Fit: The sail is made to measure from D-ring to D-ring so it can match specific spaces and offer a neat, tailored installation.
• Water & Air Permeable: The design allows airflow and some water passage, reducing wind stress and pooling during rain.

Who It's For

This shade sail is ideal for homeowners, small commercial spaces, and DIY installers who need a large, custom-fit canopy for patios, decks, or play areas and who value strong UV protection and durable materials. People who want a cooler outdoor environment and solid hardware will appreciate the stainless steel D-rings and reinforced stitching.

It may be less suitable for buyers who need a fully waterproof awning or those who cannot measure precisely from D-ring to D-ring; customers who prefer a rigid structure rather than a tensioned fabric should consider other shade systems.

Pros & Cons

Pros

• Excellent sun protection with up to 95% UV blockage for safer outdoor time.
• Durable 200 GSM HDPE fabric and reinforced edges hold up well in wind and sun.
• Custom sizing delivers a neat fit when measured from D-ring to D-ring.
• Permeable design reduces wind stress and avoids water pooling.

Cons

• Not fully waterproof, so it will not keep all rain out during heavy storms.
• Requires careful measuring and a small corner gap for optimal tension and fit.

Specifications

Brand	Amgo
Material	200 GSM HDPE
UV Blockage	Up to 95%
Size	Custom 18' x 20' rectangle
Hardware	Stainless steel D-rings with reinforced edges
Permeability	Water and air permeable
Assurance	3 years

Our Verdict

For anyone seeking a sturdy, custom-sized shade sail that cuts sun exposure and cools outdoor spaces, this 18' x 20' rectangle is a solid, cost-effective choice. The heavy duty 200 GSM HDPE, reinforced stitching, and stainless steel D-rings make it durable and well suited to windy conditions, while the custom measurement approach ensures a tidy installation and good tension when mounted correctly.

Frequently Asked Questions

Is the sail fully waterproof?
No. The fabric is water and air permeable, so it will shed some water but is not designed to be fully waterproof in heavy rain.

How should I measure for a custom fit?
Measure from D-ring to D-ring for each side and allow the recommended corner gap of at least 0.5 ft, or reduce by 1 to 1.5 ft per side if necessary for your setup.

Will it stand up to high winds?
Customers report strong performance in winds when properly installed; the reinforced edges and stainless steel D-rings improve wind resistance, though correct tensioning is important.