6" DuraVent DVL Close Clearance Connector Kit 6DVL-KVP 6" DVL Close Clearance Connector Kit includes: DVL Adaptor (2) 24" DVL Double-Wall Black Pipe 12" DVL double-wall Adjustable Black Pipe. Use kit to connect between appliance and chimney for a typical 8' through-the-ceiling installation. Diameter: 6" Note: Do not use with DuraTech Premium or DuraTech Canada .016†stainless steel inner wall. .018†galvanized outer painted black.