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Thickness: 1 in Width: 48 in Length: 120 in CertainTeed® 409586 CertainTeed® Ultra*Duct™ 409586 Duct Board, 1 in Thick, 48 in W, 120 in L, SL CT Facing, R-4.3 R-Value, Fiberglass |
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Thickness: 1-1/2 in Width: 48 in Length: 120 in CertainTeed® 409588 CertainTeed® Ultra*Duct™ 409588 Duct Board, 1-1/2 in Thick, 48 in W, 120 in L, SL CT Facing, R-6.5 R-Value, Fiberglass |
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