The DVL Increaser is used to increase from a smaller appliance flue to outlet to larger diameter chimney or stovepipe.
DuraVent DVL is a double-wall interior stovepipe for connecting woodstoves to a manufactured chimney.
Construction Material: .016" stainless steel inner with .018" galvanized outer
Increases from 6'' - 8''.
Manufacturer's Limited Lifetime Warranty