{"product_id":"knauf-rigid-fiberglass-insulation-board-unfaced-24-in-x-48-in-x-1-1-2-in-144-sq-ft-kn4426e","title":"Knauf Rigid Fiberglass Insulation Board, Unfaced, 24 in x 48 in x 1-1\/2 in (144 sq ft) – KN4426E","description":"\n    \u003ch1\u003eUnfaced rigid fiberglass insulation board (24\" x 48\" x 1-1\/2\")\u003c\/h1\u003e\n    \u003cp\u003e\u003cstrong\u003eKnauf rigid unfaced fiberglass insulation board delivers reliable thermal and acoustical performance for a wide range of building applications. The 24 in x 48 in x 1-1\/2 in boards are easy to handle and install for a clean, finished look while helping improve energy efficiency and noise reduction.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003chr\u003e\n    \u003ch2\u003eKey Features:\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eThermal + Sound Control:\u003c\/strong\u003e R-6.5 insulation value with strong acoustical performance for more comfortable, quieter spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnfaced Fiberglass Board:\u003c\/strong\u003e Designed for applications where a facing is not desired, with a neat, professional finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application Use:\u003c\/strong\u003e Suitable for attic, basement, ceiling, crawlspace, floor, wall, and other common building assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Handling and Fast Install:\u003c\/strong\u003e Rigid board format installs quickly and stays stable for a polished appearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Temperature Capability:\u003c\/strong\u003e Rated up to 400°F for use in demanding conditions where higher heat resistance is needed.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003e\u003cstrong\u003ePlease check the Product Data Sheet \u003ca href=\"https:\/\/superarbor.io\/cdn\/shop\/files\/Knauf_468051_Specification_Sheet.pdf?v=1766980687\" target=\"_blank\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003eHere\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\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\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRigid Board Insulation\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\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\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-1\/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\u003e144 sq-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eR-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-6.5\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\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDensity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 pcf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Type\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\u003eResists\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdditional Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStaple-Free, #6 pcf Density\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\u003eEarthwool®\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: What are the board dimensions and total coverage?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Each board is 24 in x 48 in x 1-1\/2 in, and the listed coverage area is 144 sq ft.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Is this insulation faced?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e No—this product is unfaced.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What R-value does this board provide?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It is rated R-6.5.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Where can this rigid board be installed?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e It’s listed for use in attic, basement, ceiling, crawlspace, floor, and wall applications.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What is the maximum temperature rating?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e The temperature rating is 400°F.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003ch2\u003eQuietly Luxurious Comfort, Hidden in Plain Sight\u003c\/h2\u003e\n    \u003cp\u003eThink of this rigid board as the unseen layer that makes a room feel undeniably refined—warmer, quieter, and more composed. The unfaced, clean-edged profile creates a crisp, streamlined look that plays beautifully in utility-forward spaces where finish matters. Use it behind wall systems or in ceilings to soften sound and sharpen comfort without adding visual clutter. It’s the kind of practical elegance that elevates everyday living into something truly luxe.\u003c\/p\u003e\n    \n    \u003chr\u003e\n    \u003cp\u003e\u003cstrong\u003eUpgrade comfort and quiet—choose Knauf unfaced rigid fiberglass board insulation for dependable performance where it matters most.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp\u003e\u003ca href=\"https:\/\/superarbor.io\/cdn\/shop\/files\/Knauf_468051_Warranty_Information_00697ea1-9ba7-455e-8661-b9d3bf7db146.pdf?v=1766980684\" target=\"_blank\"\u003eWarranty\u003c\/a\u003e\u003c\/p\u003e\n    \n    ","brand":"Knauf®","offers":[{"title":"Default Title","offer_id":52533915746671,"sku":"KN4426E","price":146.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/KN_KN4426E.jpg?v=1766980691","url":"https:\/\/superarbor.io\/products\/knauf-rigid-fiberglass-insulation-board-unfaced-24-in-x-48-in-x-1-1-2-in-144-sq-ft-kn4426e","provider":"Super Arbor","version":"1.0","type":"link"}