This Burnham Commercial Thimble is a single-wall, metallic component designed to facilitate the safe passage of combustion gases from heating appliances through a wall to the outside environment. The product measures 6 inches in diameter and is constructed from high-quality, heat-resistant stainless steel, ensuring durability and longevity. It features an adjustable length to accommodate different wall thicknesses and is designed for use with category I appliances, including gas-fired boilers and water heaters. The thimble's primary function is to provide insulation between the hot flue pipe and the materials of your building structure, preventing potential fire hazards. It also serves to protect the masonry or woodwork from corrosive flue gases. This product meets industry safety standards for venting systems.
