
Duck Brand Air Conditioner Foam Insulating Panels, 18-Inch x 9-Inch x 7/8-Inch Each, 1286294
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These are two fiberglass foam panels, each 18 by 9 inches and 7/8 inch thick, made to seal the gaps around a window air conditioner. The dense foam blocks air leaks and vibration paths between the unit and the window frame, which helps keep cooled air in and outside heat and noise out. They suit renters and homeowners installing a window AC who want a simple cut-to-fit seal rather than caulk or custom framing. Compared with thin weatherstrip or foam tape, the thicker 7/8-inch panels fill larger gaps around a unit, but they are sold in one size and must be trimmed for smaller openings.
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These Duck Brand insulating panels are made to seal the gaps around a window air conditioner. Each panel measures 18 inches long, 9 inches wide and 7/8 inch thick. The panels are made of fiberglass and are gray.
The package includes 2 panels, which together cover 324 square inches.







