The Owens Corning R-11 Un-Faced Batts are flexible fiberglass insulation batts that are used for roof/ceiling and interior/exterior wall applications. They're installed in wood or metal framing cavities or between furring channels. Size Sq Ft/Pack IRN Application 3.5 in. x 15.25 in. x 93 in. 157.58 BU120 Wood 3.5 in. x 15.25 in. x 105 in. 177.92 BU122 Wood 3.5 in. x 16 in. x 96 in. 170.67 M41Q Metal 3.5 in. x 23.25 in. x 93 in. 240.25 BU121 Wood 3.5 in. x 24 in. x 96 in. 256 M44 Metal FEATURES & BENEFITS Sized for metal or wood framing. Can be stapled or friction-fit. Easy to handle and install. Trim and fabricate with a utility knife. Meets thermal specifications. Improves interior noise control. Inorganic. Non-corrosive to steel, aluminum or copper. Dimensionally stable and will not decay or slump in the cavity. R-Value: R-11
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