locktop damper lock top chimney damper 13x17 or 8x17 , please list size

Description

Top sealing dampers are the open and shut solution to replace worn out fireplace throat dampers. Mount on top of the flue tile or directly on the chimney crown, Cast aluminum includes all mounting hardware and a 25 ft. stainless steel cable. Seals out animals, birds, insects, leafs, rain and snow. Prevents heat and air conditioning loss when closed. Fits 13 x 17 flues from:11.5" x 15.5" to 14" x 17.5". Lifetime Warranty