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Dampers & Chimney Caps > Dampers > Lyemance Dampers Products - Lyemance Dampers 13" X 13" Original Lyemance Damper By Gelco Other Sizes: -- Choose a size -- 13" X 13" Original Lyemance Damper 13" X 18" Original Lyemance Damper 17" X 17" Original Lyemance Damper 8" X 17" Original Lyemance Damper 8" X 8" Original Lyemance Damper 9" X 13" Original Lyemance Damper