Snaps into the ceiling support box or finishing collar and extends down to fit into stovepipe for a drip-free connection to a DuraTech, DuraPlus, DuraPlus HTC, or DuraLiner Chimney system. Provides a strong mechanical connection. Adapter will work with all 6"-8" DuraPlus, 6"-8" DuraPlus HTC, and 7"-8" DuraTech Installations. Adapter will work with 5"-6" DuraTech Ceiling Support Box Installations only. Comes complete with drill point TEK type fasteners. Offers improved esthetics with a clean modern appearance.