ShadeMart 12' x 20' Beige Rectangle Shade Sail - Heavy-Duty HDPE, UV-Resistant & Breathable

The ShadeMart 12' x 20' beige rectangle shade sail is a heavy-duty, breathable HDPE canopy that blocks up to 95% of UV rays while allowing air and water to pass through for cooler, comfortable outdoor spaces.

Designed for patios, carports, pools and yards, this ShadeMart rectangle shade sail pairs durable woven HDPE fabric with stainless-steel D-rings and reinforced webbing to withstand regular outdoor use. It’s water-permeable rather than fully waterproof, which prevents ponding and improves airflow while reducing temperatures beneath the canopy by roughly 10–15 degrees in direct sun.

How will this shade sail change my outdoor comfort?

By blocking the sun’s strongest rays and promoting airflow, the ShadeMart sail reduces direct heat and glare in the shaded area. The breathable fabric prevents water buildup and keeps the covered zone feeling cooler and more pleasant on hot days.

• Blocks up to 95% of harmful UV radiation.
• Permeable weave allows air circulation for temperature reduction.
• Water passes through the fabric to avoid sagging and pooling.
• Rectangular 12' x 20' footprint covers large seating or parking areas.

What are the materials and how durable is the construction?

The sail is made from woven high-density polyethylene (HDPE) that resists fading, stretching and mildew when properly installed. Each corner features stainless-steel D-rings sewn into heavy-duty white webbing to provide secure anchor points and long-lasting performance.

• Woven HDPE fabric resists UV degradation and retains shape.
• Stainless-steel D-rings prevent corrosion in outdoor environments.
• Reinforced webbing at corners reduces stress and tearing.
• Available in multiple colors to match outdoor décor.

Can I install this sail where I need it, and does ShadeMart offer custom sizes?

The ShadeMart sail attaches to most stable structures—poles, trees, posts, walls or pergolas—using appropriate hardware. ShadeMart offers custom sizing to fit nonstandard areas; just measure your installation space carefully before ordering since sizes are made to your specifications.

• Compatible with common hardware kits for poles, walls, and trees.
• Custom sizing options available to match unique spaces.
• Recommended to plan anchor distances and angles for tensioning.
• Not fully waterproof—design for drainage when mounting.

How do I maintain and care for the shade sail to prolong its life?

Maintaining the sail is simple: occasional rinsing with a garden hose and mild soap removes dirt and debris. Avoid harsh chemicals and fold the fabric dry for off-season storage to prevent mildew and extend the product life.

• Rinse periodically to remove dust, pollen and salt residue.
• Use mild soap and soft brush for spot cleaning; no bleach.
• Dry fully before storing to avoid mildew formation.
• Remove during extreme storms or heavy snow to prevent damage.

Who this is for: The ShadeMart 12' x 20' rectangle shade sail is ideal for homeowners and small-business owners seeking an affordable, attractive sun-control solution for patios, carports, poolside areas and outdoor seating. It suits anyone who wants strong UV protection, improved airflow, and flexible mounting options—plus those who need a custom size to fit an irregular space.