Lyemance DLT1313 13 X 13 Lock-Top Damper

Lock-Top 13'' x 13'' Energy Saving Damper. Note: Don't use Lock-Top dampers with gas logs - failure to open could cause carbon monoxide to back up into the house. In case of a gas leak, gas could be trapped in the flue, resulting in an explosion. Features: Type: Damper. Stainless steel and cast-aluminum construction. Silicone rubber seals tight. Adhesive, 30' cable and hardware included. Lifetime Warranty. Specifications: Overall Dimensions: 13'' (W) x 13'' (D). Fits Inside Flue Sizes: 9'' x 9'' to 12.5'' x 12.5''. Base Dimensions I.D.: 10'' x 10''. Base Dimensions O.D.: 13'' x 13''. Height of Open Lid: 9''. Cross-Sectional Area (sq. in.): 100.