{"product_id":"1616161-r-21-ecobattr-unfaced-fiberglass-insulation-batt-5-1-2-x-23-x-93-103-98-sf","title":"Knauf EcoBatt Pro Cut R-21 Unfaced Fiberglass Batt Insulation, 23 in x 93 in (103.98 sq-ft)","description":"\u003ch1\u003eR-21 Unfaced Fiberglass Batt Insulation (23 in x 93 in)\u003c\/h1\u003e\n    \u003cp\u003e\u003cstrong\u003eKnauf® high-density unfaced fiberglass batt insulation delivers R-21 thermal performance and added sound control for framed construction. Designed to cut easily and recover to full thickness for a snug, staple-free fit in walls, floors, and ceilings.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003chr\u003e\n    \u003ch2\u003eKey Features:\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHigh Thermal + Acoustic Performance:\u003c\/strong\u003e R-21 fiberglass batt helps maintain indoor comfort while absorbing excess noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast, Clean Handling:\u003c\/strong\u003e Cuts easily, resists tearing, and installs quickly with low dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnug Fit Recovery:\u003c\/strong\u003e Highly resilient batt rebounds to full thickness for consistent cavity fill.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnfaced Flexibility:\u003c\/strong\u003e Unfaced design allows specifier choice of vapor retarder as required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStaple-Free Installation:\u003c\/strong\u003e Engineered to friction-fit in standard framing applications.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003chr\u003e\n    \u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\n    \u003ctable\u003e\n        \u003cthead\u003e\n            \u003ctr\u003e\n                \u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n                \u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n            \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eR-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiberglass batt insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFacing Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnfaced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiberglass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e93 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e103.98 sq-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePro Cut Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSub-Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePerformance+®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Locations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAttic; Basement; Ceiling; Crawlspace; Floor; Wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400 deg F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Attribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStaple-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire Test Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM E84\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire Hazard Classification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25\/50 or less\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProposition 65 Warning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalifornia Residents: Proposition 65 Warning www.P65Warnings.ca.gov\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003chr\u003e\n    \u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Where can this batt insulation be installed?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Suitable for attic, basement, ceiling, crawlspace, floor, and wall applications in wood or metal framed construction.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Is it faced or unfaced?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e This product is unfaced, allowing you to pair it with an appropriate vapor retarder where required by design\/code.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What R-value and thickness does it have?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It is R-21 insulation with a listed thickness of 5-1\/2 inches.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: How much area does one unit cover?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It covers 103.98 sq-ft.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Is it rated for fire performance testing?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e When tested to ASTM E84, it is listed with a Fire Hazard Classification of 25\/50 or less.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003ch2\u003eQuiet Comfort, Seamlessly Layered\u003c\/h2\u003e\n    \u003cp\u003eTrue luxury starts with what you feel—steady warmth, softened sound, and rooms that hold their calm. This high-density, unfaced fiberglass batt brings a clean, tailored performance to the bones of your space, filling cavities with a resilient, snug recovery that reads as effortless. Use it to elevate bedrooms, media rooms, and shared walls where serenity matters most. It’s the behind-the-scenes essential that makes every finish feel more refined.\u003c\/p\u003e\n    \n    \u003chr\u003e\n    \u003cp\u003e\u003cstrong\u003eUpgrade your comfort and quiet with Knauf® R-21 unfaced batts—add to cart to insulate your next wall, floor, or ceiling project with confidence.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp\u003e\u003ca href=\"https:\/\/superarbor.io\/cdn\/shop\/files\/Knauf_468051_Warranty_Information_abc569c2-b6f4-4741-98b1-fdd609700250.pdf?v=1766980672\" target=\"_blank\"\u003eWarranty\u003c\/a\u003e\u003c\/p\u003e\n    \u003cp\u003e\u003ca href=\"https:\/\/superarbor.io\/cdn\/shop\/files\/Knauf_468051_Instruction_Installation_Manual_6d17c530-e5e8-45e4-8e5d-5a2146a193de.pdf?v=1766980673\" target=\"_blank\"\u003eInstallation\u003c\/a\u003e\u003c\/p\u003e","brand":"Knauf®","offers":[{"title":"Default Title","offer_id":48991807307990,"sku":"7.25387E+11","price":224.63,"currency_code":"USD","in_stock":false}],"url":"https:\/\/buildsupplyus.myshopify.com\/products\/1616161-r-21-ecobattr-unfaced-fiberglass-insulation-batt-5-1-2-x-23-x-93-103-98-sf","provider":"Buildsupply","version":"1.0","type":"link"}