Selkirk-Metalbest Metalbest 4" Inner Diameter - Direct-Temp Direct Vent Pipe - Double Wall - 22" Adjustable Pipe Length

Pipe lengths provide the core part of the chimney system. Pipes should match the inside diameter of all other pieces and all pieces should be from the same manufacturer. This telescopic length adjusts from 14" to 22" in length.Direct-Temp system features stainless steel inner and heavy duty galvanized steel outer walls. Heavy duty centering brackets keep inner pipe centered and chamfered edges allow for easy slide-together assembly. The free-floating inner liner allows the pipe to expand and contract und...