{"product_id":"shademart-18-ft-x-20-ft-grey-sun-shade-sail-upf50-rectangle","title":"ShadeMart 18 ft x 20 ft Grey Sun Shade Sail UPF50 Rectangle","description":"\u003cp\u003eIn this review of the ShadeMart 18 ft x 20 ft Grey Sun Shade Sail, the bottom line is simple: it is a heavy-duty, breathable rectangle canopy best for homeowners and small businesses wanting reliable sun protection and airflow. The sail's woven HDPE fabric blocks up to 95% of harmful UV rays while remaining water permeable, so it cools covered areas without trapping rainwater. Installation is straightforward with stainless steel corner D rings and heavy webbing, and the material stands up to wind and rough outdoor use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e provides durable, fade-resistant shade while allowing air to pass through so the covered area stays cooler and ventilated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel D rings:\u003c\/strong\u003e heavy-duty corner fittings on white webbing make attachment to posts or walls secure and corrosion resistant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable design:\u003c\/strong\u003e lets rain and moisture through the canopy rather than pooling, reducing stress on the fabric and supporting structures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh UV protection:\u003c\/strong\u003e blocks up to 95% of UV rays to reduce heat and protect skin and furnishings beneath the sail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e a range of sizes and colors means the product can be tailored to patios, carports, pergolas, and other spaces when measured accurately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectangle styling:\u003c\/strong\u003e a simple shape that integrates easily with modern outdoor layouts and decorative schemes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis shade sail is ideal for people who need a durable, breathable canopy over patios, carports, pools, boats, or outdoor seating-especially where airflow and UV protection matter more than full waterproofing. Installers who prefer simple attachment to trees, poles, or walls will appreciate the reinforced D rings and webbing.\u003c\/p\u003e\u003cp\u003eIt is less suitable for buyers who need a fully waterproof cover or those who expect complete rain protection during heavy downpours. Also, precise measurements are required for custom orders, so casual buyers who cannot measure their site accurately should seek professional help.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBlocks a high percentage of UV rays while significantly lowering temperatures underneath.\u003c\/li\u003e\n\u003cli\u003eDurable woven HDPE fabric and stainless steel corners offer strong weather resistance and longevity.\u003c\/li\u003e\n\u003cli\u003eWater permeable design prevents water pooling and reduces stress on mounting points.\u003c\/li\u003e\n\u003cli\u003eEasy to install to many structures with the proper hardware kit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot fully waterproof, so it will not provide complete protection from heavy rain.\u003c\/li\u003e\n\u003cli\u003eSize may vary slightly due to manual measurements, requiring care when ordering custom sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eShadeMart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRectangle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e18 ft x 20 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eWoven HDPE (High Density Polyethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorner fittings\u003c\/td\u003e\n\u003ctd\u003eStainless steel D rings on heavy white webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctionality\u003c\/td\u003e\n\u003ctd\u003eWater permeable, breathable, UPF50 UV protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical applications\u003c\/td\u003e\n\u003ctd\u003ePatio, carport, pergola, pool, yard, boat cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 18 ft x 20 ft Grey Sun Shade Sail is a practical, value-oriented choice for anyone needing durable sun protection with airflow rather than a waterproof canopy. Its robust HDPE fabric and stainless steel corners make it a sensible long-term option for patios, carports, and outdoor seating areas, provided buyers measure carefully and accept that it is water permeable rather than fully rainproof.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this shade sail waterproof?\u003c\/strong\u003e\u003cbr\u003eAnswer. No, this style is water permeable and breathable; it allows water to pass through rather than acting as a waterproof tarp.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much UV protection does the fabric provide?\u003c\/strong\u003e\u003cbr\u003eAnswer. The woven HDPE fabric blocks up to 95% of harmful UV rays to lower temperatures under the canopy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be attached to trees or poles?\u003c\/strong\u003e\u003cbr\u003eAnswer. Yes, the sail has stainless steel D rings and heavy webbing so it can be mounted to posts, trees, walls, or roofs with appropriate hardware.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48636684435675,"sku":"B0B5LXZRJT","price":173.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/816THzWgLIL._AC_SL1500_8ea5df62-4f3a-4ce3-af31-a35cfdf64bbb.jpg?v=1778721768","url":"https:\/\/gearmusthave.com\/products\/shademart-18-ft-x-20-ft-grey-sun-shade-sail-upf50-rectangle","provider":"GearMustHave","version":"1.0","type":"link"}