{"product_id":"custom-size-18ft-x-21ft-white-rectangle-sun-shade-sail-95-uv-block","title":"Custom Size 18ft x 21ft White Rectangle Sun Shade Sail - 95% UV Block","description":"\u003cp\u003eIn this review the Custom Size 18' x 21' White Rectangle Sun Shade Sail is evaluated for homeowners and small commercial spaces that need strong sun protection with flexible installation. The bottom line: this shade sail is best for anyone who wants durable, high-coverage protection that cuts temperatures and blocks most UV exposure while remaining breathable. The reviewer found the fabric and reinforced construction provide dependable performance outdoors and the customizable D-ring to D-ring sizing makes it easy to tailor the fit to an awkward patio or play area.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e95% Sun Protection:\u003c\/strong\u003e The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays for safer outdoor time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Reduction:\u003c\/strong\u003e Installed properly the sail can reduce ambient temperature by up to 15 degrees compared to unshaded areas, improving comfort in summer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Stainless steel D-Rings, reinforced edges and double-layer stitching resist fraying and extend usable life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and Air Permeable:\u003c\/strong\u003e The woven material sheds some water and allows airflow so the shaded area does not feel stuffy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable Fit:\u003c\/strong\u003e Exact measurements from D-ring to D-ring allow a tailored canopy that fits unusual shapes and mounting points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e The sail installs to trees, roofs, walls or poles using standard mounting hardware and guidance on corner gaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis shade sail is ideal for homeowners, small businesses and childcare providers who need broad UV protection for patios, playgrounds and outdoor seating. It suits users who want a long-lasting, low-maintenance canopy that still allows airflow and some light transmission.\u003c\/p\u003e\n\u003cp\u003eIt is less suited to buyers who need a fully waterproof awning or who prefer a rigid structure; those looking for a sealed, impermeable cover should consider a dedicated waterproof canopy. Also, buyers who need instantaneous setup without any measuring or cutting may want a fixed-size kit from another option.\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 sun blockage and measurable temperature reduction make outdoor spaces more comfortable.\u003c\/li\u003e\n\u003cli\u003eRobust materials and reinforced stitching give confidence in durability and longevity.\u003c\/li\u003e\n\u003cli\u003eCustom measurements from D-ring to D-ring let the sail fit awkward or irregular spaces.\u003c\/li\u003e\n\u003cli\u003eBreathable weave performs well in wind and rain without ballooning excessively.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial quality feedback is mixed among users, so tactile feel and finish may vary slightly between production runs.\u003c\/li\u003e\n\u003cli\u003eNot fully waterproof; it is water permeable which is intentional but means it will not provide complete rain protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e18ft x 21ft rectangle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e200 GSM HDPE fabric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Protection\u003c\/td\u003e\n\u003ctd\u003eUp to 95% blockage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Reduction\u003c\/td\u003e\n\u003ctd\u003eUp to 15 degrees vs unshaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003eStainless steel D-Rings; reinforced edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePermeability\u003c\/td\u003e\n\u003ctd\u003eWater and air permeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years assurance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Custom Size 18' x 21' White Rectangle Sun Shade Sail is a practical choice for anyone needing broad UV protection and cooler outdoor spaces without a rigid structure. Its combination of \u003cstrong\u003e95% sun protection\u003c\/strong\u003e, sturdy reinforced construction and customizable sizing offers solid value for patios, gardens and light commercial areas where breathability and durability matter more than total waterproofing.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I measure for a custom fit?\u003c\/strong\u003e\u003cbr\u003eMeasure from D-ring to D-ring for each side and allow the recommended corner gap of at least 0.5 ft, reducing as instructed if space is constrained.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this sail fully waterproof?\u003c\/strong\u003e\u003cbr\u003eNo, the woven 200 GSM HDPE material is water and air permeable so it sheds some water but is not a sealed waterproof cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mounting points work best?\u003c\/strong\u003e\u003cbr\u003eTrees, roofs, walls and poles are all suitable; use sturdy anchors and ensure corner gaps are maintained for optimal tension and performance.\u003c\/p\u003e","brand":"Amgo","offers":[{"title":"Default Title","offer_id":48612839882971,"sku":"B08TTH7YN9","price":190.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91aBggHwanL._AC_SL1500_eba7e317-b262-4039-a237-b5a5eaa849e2.jpg?v=1778755486","url":"https:\/\/gearmusthave.com\/products\/custom-size-18ft-x-21ft-white-rectangle-sun-shade-sail-95-uv-block","provider":"GearMustHave","version":"1.0","type":"link"}