{"product_id":"shademart-20ft-x-21ft-blue-rectangle-sun-shade-sail-upf50-canopy","title":"ShadeMart 20ft x 21ft Blue Rectangle Sun Shade Sail - UPF50 Canopy","description":"\u003cp\u003eIn this review the ShadeMart 20' x 21' Blue Sun Shade Sail is evaluated for homeowners and RV owners who need a large, breathable canopy that blocks sun and reduces temperature. The bottom line: this woven HDPE rectangle sail is built for long outdoor use and reliable UV protection, making it a sensible choice if you want a heavy duty, water-permeable cover rather than a waterproof tarp. The review focuses on fit, material quality, installation, and real-world performance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Woven HDPE fabric provides a durable, lightweight canopy that resists fading and sheds heat rather than holding moisture.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUV Protection:\u003c\/strong\u003e UPF50 construction blocks up to 95% of harmful UV rays to noticeably lower temperatures beneath the sail.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBreathability:\u003c\/strong\u003e The fabric is water permeable and allows air to pass through, reducing wind load and preventing pooling during rain.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHardware:\u003c\/strong\u003e Stainless steel D rings reinforced with heavy duty white webbing at corners improve attachment strength and longevity.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCustom Sizes:\u003c\/strong\u003e A range of custom size options is offered so you can match the sail to patios, carports, pools, or RV covers when measured accurately.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStyling:\u003c\/strong\u003e Rectangle shape and color choices let the sail integrate with existing outdoor design while serving as a decorative sun screen.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis shade sail is best for homeowners, RV owners, and small business operators who need broad UV protection and airflow rather than full waterproofing. It works well over patios, carports, pergolas and pools where shade and ventilation are priorities, and installers who want stainless steel corner hardware for secure anchoring will appreciate the reinforced webbing.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for buyers who need a fully waterproof shelter or who cannot accept small dimensional variance from manual measurement. If you require a tarp that keeps all rain out or need an exact, factory-cut dimension tolerance, consider a different waterproof cover or a rigid structure.\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\u003eEffective sun protection and heat reduction thanks to the UPF50 woven HDPE fabric.\u003c\/li\u003e\n \u003cli\u003eDurable build with stainless steel D rings and heavy duty webbing at attachment points.\u003c\/li\u003e\n \u003cli\u003eBreathable and water permeable design prevents water pooling and reduces wind stress.\u003c\/li\u003e\n \u003cli\u003eEasy to install in a variety of configurations with the proper hardware kit.\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 keep heavy rain out of a covered area.\u003c\/li\u003e\n \u003cli\u003eSome customers report mixed expectations on color and that manual measurement can produce slight size variations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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\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 Rating\u003c\/td\u003e\n\u003ctd\u003eUPF50 (blocks up to 95% UV)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCorner Hardware\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\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003eWater permeable, not waterproof\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' rectangle shade sail is a practical, value-minded choice for people who need strong UV protection and airflow across large outdoor areas. Its durable HDPE fabric and reinforced corners make it reliable for patios, carports, and RV covers, but buyers who need waterproof coverage or exact dimensional precision should consider alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this shade sail waterproof?\u003c\/strong\u003e\u003cbr\u003eThe fabric is water permeable and breathable, so it will not keep all rain out and is not a waterproof tarp.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be mounted to trees, poles, or a wall?\u003c\/strong\u003e\u003cbr\u003eYes, with the proper hardware kit the stainless steel D rings and webbing allow attachment to poles, trees, walls, and roofs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the color fade in sun?\u003c\/strong\u003e\u003cbr\u003eCustomers generally report good color retention and durability, though some feedback is mixed on exact color match versus advertised shades.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48646966378715,"sku":"B0B1H8BJQ3","price":202.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91CyVuDkKhL._AC_SL1500_0d6b423c-ed5a-4310-a3a1-8ea796011ea4.jpg?v=1778742237","url":"https:\/\/gearmusthave.com\/products\/shademart-20ft-x-21ft-blue-rectangle-sun-shade-sail-upf50-canopy","provider":"GearMustHave","version":"1.0","type":"link"}