"This United States Stove Company Steel Chimney Cap reduces wind-induced down drafts and prevent rain, snow, debris and animals from entering your chimney. Mounting Hardware Included Yes, Adjustable No, Material Type Steel, Mounting Type Bolt down, Pieces qty. 1, Product Style Chimney cap, Color Black, Length in. 9, Fuel Type Wood burning, Outside Diameter in. 13. Bolt-down top removes for easy cleaning Durably made with all-welded steel construction and black satin-coat finish Fully assembled and ready to install"