DWF Fire Rated 60 Min Knee Wall Access Door All Sizes Size:27 in x 43 in customers have found the Double RT65BL customers have found the Double Bubble Reflective Foil Insulation Rolls to be a versatile Owens Corning EcoTouch R11 Un Faced Batts (All Sizes): These fiberglass insulation batts are unfaced and designed to be used in wood or metal framing cavities of walls The DWF Fire Rated 60 min Knee Wall Access Door is a high performance fire resistant solution designed to provide safe access to non habitable spaces while ensuring superior fire protection com We are happy to process a return or exchange a product within 30 days from date of delivery