Custom Size 17ft x 20ft Black Rectangle Sun Shade Sail - UPF50

In this review the custom size 17' x 20' black rectangle sun shade sail stands out as a practical choice for anyone needing reliable sun protection over a patio, play area, or garden seating. The biggest reason to buy is straightforward: it delivers substantial sun blockage and cooler shade in a heavy duty, customizable fabric that installs with basic hardware. The sail is aimed at homeowners, small business outdoor spaces, and anyone who wants a tailored fit; the review focuses on real-world performance, ease of installation, and durability rather than marketing claims.

Key Features

• 95% UV Blockage: The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays for safer outdoor time and reduced sun exposure.
• Temperature Reduction: The shade sail can lower ambient temperature by up to 15 degrees compared to unshaded areas, making outdoor seating noticeably cooler.
• Customizable Fit: Measured D-ring to D-ring sizing allows a tailored fit to the exact area, and straight-edge customization is available on request.
• Commercial Standard Durability: Reinforced edges, double-layer stitching and stainless steel D-rings deliver heavy duty performance built for frequent use.
• Water and Air Permeable: The breathable HDPE weave sheds some rain while allowing airflow, reducing wind load and preventing pooling.
• 3-Year Assurance: A three year assurance provides added confidence in material longevity and stitching quality.

Who It's For

This shade sail is well suited for homeowners who want a custom-fit canopy over a patio, pergola, or kid play area, and for small commercial outdoor spaces like cafe seating where sun protection and airflow matter. Buyers who value a heavy duty fabric and reinforced mounting points will appreciate the attention to durability.

It is less suited for those seeking a fully waterproof awning or a permanent, rigid structure; while the fabric is water and air permeable and handles wind well, it is intended as a shade sail rather than a sealed roof. Also, customers needing off-the-shelf one-size fits all covers should consider ready-made sizes instead of a custom order process.

Pros & Cons

Pros

• High sun protection from the 200 GSM HDPE fabric that blocks up to 95% of UV.
• Durable build with stainless steel D-rings, reinforced edges and double stitching for long service life.
• Custom sizing ensures a precise fit for irregular or specific outdoor spaces.
• Reduces temperature under the sail and remains breathable to avoid trapped heat.

Cons

• Not fully waterproof, so it will not replace a solid roof in heavy rain.
• Custom ordering means longer lead time and the need to measure D-ring to D-ring accurately.

Specifications

Material	200 GSM HDPE
Sun Protection	Up to 95% UV blockage
Size (example)	17' x 20' rectangle (custom order)
Mounting	Stainless steel D-rings with reinforced edges
Performance	Reduces temperature by up to 15 degrees; water and air permeable
Seams	Double-layer stitching to resist fraying
Warranty	3-year assurance included

Our Verdict

The custom 17' x 20' black rectangle shade sail is a practical, value-oriented choice for anyone needing strong sun protection and a tailored fit. With heavy duty fabric, reinforced hardware, and measurable temperature reduction it suits patios, play areas and light commercial use; just be aware it is designed as a breathable shade canopy rather than a waterproof roof.

Frequently Asked Questions

How do I measure for a custom sail?
Measure from D-ring to D-ring along the planned attachment points, allowing the recommended gap from each D-ring to the mounting pole for correct tension.

Is the fabric waterproof?
The HDPE weave is water and air permeable so it sheds some rain and reduces wind load, but it is not a fully waterproof, sealed roof replacement.

Can it handle strong winds?
With proper tensioning and sturdy anchor points the heavy duty construction and reinforced corners handle high winds better than thin fabrics, though extreme storms can still require removal for safety.