Royal Shade 17ft x 21ft Brown Custom Size Sun Shade Sail - Heavy Duty

In this review of the Royal Shade 17' x 21' Brown Custom Size Sun Shade Sail the bottom line is clear: this is a practical, heavy-duty option for anyone needing reliable UV protection over patios, play areas, or vehicle covers. The review highlights the shade sail's most convincing trait - its 200 GSM HDPE fabric and precision corner-to-corner measurement method, which together produce a taut, low-sag canopy that blocks up to 95% of UV rays and noticeably cools shaded areas. Installation is straightforward for those familiar with outdoor hardware, and the product arrives ready to pair with a separate hardware kit for best results.

Key Features

• Corner-to-corner measurement: Measurement is taken from corner to corner and the slightly curved edges are calculated to keep the sail tight and prevent mid-sagging after installation.
• 200 GSM HDPE fabric: The woven, knitted high-density polyethylene is breathable to avoid water pooling and reduces temperatures by up to about 15 degrees in shaded areas.
• High UV protection: The material blocks up to 95% of harmful UV rays and comes with a 3-year limited warranty against UV degradation.
• Reinforced edges: Double-layer stitching around the perimeter prevents fraying and helps the sail keep its shape under tension.
• Stainless D-rings: Corrosion-resistant stainless steel D-rings at each corner and extra corner stitching make installation to posts or walls easier and more secure.

Who It's For

This shade sail is aimed at homeowners and small businesses who want an effective, factory-made custom-size canopy that resists sun exposure and cuts ambient temperature. It suits patios, carports, playgrounds, or seating areas where a rectangular shaded footprint is needed and where buyers will pair the sail with a separate hardware kit for a complete installation.

Those seeking a permanent metal awning or a water-tight solution should look elsewhere, as the woven HDPE is breathable and designed to shed some water but not to function as a fully waterproof roof. Buyers who want straight edges instead of the manufacturer-calculated curved edges should contact the seller for a custom order.

Pros & Cons

Pros

• Durable 200 GSM HDPE fabric blocks up to 95% of UV rays and reduces heat beneath the sail.
• Precision corner-to-corner measurement with slightly curved edges gives a neat, tight installation and resists mid-sagging.
• Stainless steel D-rings and double-stitched edges add strength for secure mounting and longer life.
• Manufacturer backing includes a 3-year limited warranty and 30-day returns on custom orders.

Cons

• Not a waterproof canopy; the breathable knit can shed some water but is not intended as a sealed roof.
• Hardware kit is not included, so additional purchase and basic rigging know-how are required for best performance.

Specifications

Brand	Royal Shade
Size (corner-to-corner)	17' x 21'
Material	200 GSM HDPE (woven knitted)
UV Block	Up to 95%
Warranty	3-year limited warranty against UV degradation
Edges & Fittings	Double-layer stitched edges with stainless steel D-rings

Our Verdict

The Royal Shade 17' x 21' Brown Custom Size Sun Shade Sail is a solid value for anyone wanting strong UV protection and a tidy, low-sag installation. Its 200 GSM HDPE construction, reinforced edges, and stainless D-rings make it well suited for seasonal or semi-permanent outdoor shade; just plan to buy a compatible hardware kit and accept that it is breathable rather than fully waterproof.

Frequently Asked Questions

How is the sail measured?
Measurement is taken from corner to corner and the edges are slightly curved by design so the sail installs tight and resists mid-sagging.

Is the material waterproof?
No, the 200 GSM HDPE woven knit is breathable to prevent pooling and is not a fully waterproof cover.

Does the product include mounting hardware?
No, hardware is not included; the manufacturer recommends pairing the sail with their Shade Sail Hardware Kit for best results.