Selkirk-Metalbest Metalbest 4" Inner Diameter - Direct Vent Pipe - Double Wall - Co-Linear Flex Connector

4" x 6-5/8" Direct Vent Co-Linear Flex Connector from Direct-TempThis co-linear flex connector is for use with Selkirk 3" aluminum Flexi-Liner or equivalent product. This adapter will convert between the appliance and the vent pipe.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 contrac...