Heat loss up the fireplace chimney accounts for an average 8% of your home heating costs! Seal Tight Top Mount Dampers help prevent this heat loss. Stay warmer and save money!
Base size 13" x 18". Fits onto flue tile that measures: Minimum 9-5/8" x 15" Maximum 12-3/4" x 17-1/2".
Free shipping within the continental United States