Simpson Duravent 58DVA-36 5x8 Inch Direct Vent Galvanized Steel Pipe - 36 Inch Length for Gas Fireplace, Furnace & Water Heater Venting Systems

Inner Diameter: 5" x 8". Required for Installations that Pass Through an Attic to Prevent Insulation and Debris from Accumulating near Vent. Length: Adjusts from 11" to 20". Width: 9-3/16". The DirectVent Pro 5" x 8" Inner Diameter Galvanized Attic Insulation Shield is a component that is used in a typical venting installation. Required for installations that pass through an attic to prevent insulation and debris from accumulating near the vent. Provides 1" clearance to combustibles.

Twist-lock construction

Use of sealant is optional

No beads or hems

Black pipe lengths feature exterior laser-welded seams.