{"product_id":"shademart-20ft-x-21ft-grey-sun-shade-sail-upf50-rectangle-cool","title":"ShadeMart 20ft x 21ft Grey Sun Shade Sail UPF50 Rectangle - Cool","description":"\u003cp\u003eIn this review the ShadeMart 20' x 21' Grey Sun Shade Sail is evaluated for homeowners and small businesses seeking a large, breathable sun cover. The bottom line: this rectangle HDPE sail is best for people who need reliable UV protection and airflow without full waterproofing. It blocks most sunlight while lowering temperatures on patios and carports, and customers repeatedly praise its durability and ease of installation, making it a practical choice for shaded outdoor living rather than a rainproof canopy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e The high density polyethylene cloth provides strong sun protection and resists tearing while remaining lightweight for easier handling and installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUPF50 sun protection:\u003c\/strong\u003e The sail blocks up to 95% of harmful UV rays and sunlight, which noticeably reduces surface and ambient temperatures under the canopy.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWater and air permeable:\u003c\/strong\u003e The breathable design allows rain and wind to pass through, preventing water pooling and reducing sail stress in breezy conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStainless steel corner D rings:\u003c\/strong\u003e Heavy duty D rings attached to white webbing give secure anchor points that hold up under tension and repeated use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e A wide selection of custom sizes lets buyers match the sail area to patios, pergolas, or carports, provided accurate measurements are supplied.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDecorative rectangle styling:\u003c\/strong\u003e The simple rectangle shape and neutral grey color integrate easily with existing outdoor decor while delivering broad shade coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe ShadeMart rectangle sail is ideal for homeowners, renters, and small business owners who want a cost-effective way to reduce sun exposure on patios, decks, pool areas, and carports. It suits anyone who values breathability and UV protection over waterproof coverage and who can install the sail on posts, walls, or trees with proper hardware.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for those who need a fully waterproof shelter or a permanent hard-structure canopy; if rain protection is a top requirement, buyers should look for a waterproof awning or solid roofing solution instead.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eHigh UV blocking performance keeps shaded areas significantly cooler and protects people and furniture from sun damage.\u003c\/li\u003e\n \u003cli\u003eDurable construction with stainless steel D rings and heavy webbing provides secure attachment points for repeated seasonal use.\u003c\/li\u003e\n \u003cli\u003eBreathable, water-permeable fabric prevents pooling and performs well in windy conditions.\u003c\/li\u003e\n \u003cli\u003eCustom size options and simple rectangle styling make it versatile for many outdoor spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eNot waterproof, so it will not provide reliable rain protection for extended downpours.\u003c\/li\u003e\n \u003cli\u003eSize accuracy depends on careful measurement and manual production, so some buyers report sizing discrepancies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eRectangle shade sail\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e20' x 21'\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\u003eUV protection\u003c\/td\u003e\n\u003ctd\u003eUPF50, blocks up to 95% of UV\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDrainage\u003c\/td\u003e\n\u003ctd\u003eWater permeable \/ breathable\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCorner fittings\u003c\/td\u003e\n\u003ctd\u003eStainless steel D rings with heavy duty white webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eColor \/ shape\u003c\/td\u003e\n\u003ctd\u003eGrey rectangle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe ShadeMart 20' x 21' grey sail is a practical, value-oriented option for anyone wanting effective \u003cstrong\u003eUV protection\u003c\/strong\u003e and improved outdoor comfort without adding a waterproof roof. Its durable fittings, breathable fabric, and customization options make it a smart choice for patios, carports, and poolside shade, provided buyers accept that it will not stop heavy rain.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this sail waterproof?\u003c\/strong\u003e\u003cbr\u003eThe fabric is water permeable and breathable, so it is not waterproof and will allow water to pass through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be attached to trees or posts?\u003c\/strong\u003e\u003cbr\u003eYes, with the proper hardware kits the sail can be anchored to poles, trees, walls, or roofs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it reduce temperature under the sail?\u003c\/strong\u003e\u003cbr\u003eYes, the UPF50 fabric blocks most sunlight and typically lowers temperatures in shaded areas by a noticeable amount.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48256278331611,"sku":"B09H8T65M7","price":202.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/816THzWgLIL._AC_SL1500_083dd504-43ef-4ca6-8b2a-1d12a0daccfc.jpg?v=1778311884","url":"https:\/\/gearmusthave.com\/products\/shademart-20ft-x-21ft-grey-sun-shade-sail-upf50-rectangle-cool","provider":"GearMustHave","version":"1.0","type":"link"}