DuraVent18 in Venting Pipe 4 " x 6 5/8 " DirectVent Pro

The DirectVent Pro 4" x 6-5/8" Inner Diameter Galvanized 18" Inner Diameter Pipe Length is a component that is used in a typical venting installation. The DuraVent 18" direct vent pipe is designed for appliances tested and listed for direct vent. Features a fully unitized twist-lock construction in both 4"x6-5/8" and 5"x8" vent sizes. Use of sealant is optional, unless specified by the appliance manufacturer. To calculate install length, subtract 1 1/2 for each joint. No beads or hems. Black pipe lengths feature exterior laser-welded seams.