4 Inch to 8 Inch Chimney Adapter - Simpson Duravent PelletVent Pro - 4PVP-X8

The PelletVent Pro Chimney Adapter is used to transition between 4" PelletVent Pro to existing chimney such as 8" DuraTech, DuraPlus, or DuraPlus HTC. Use high temperature furnace cement to seal around the edge to the chimney.