SuperVent 6-in x 36-in Insulated Double Wall Stainless Steel Chimney Pipe (used)*Item has dents, refer to pictures* Supervent chimney pipe, the rugged all fuel chimney that makes every installation simple, fast and produces superior performance. Slim, advanced design allows for installation between 16 in centers and only requires 2 in clearance from combustible material Secure twist lock design couples sections together with just a 1 8 of a turn Chimney is sized according to the inner diameter