The DirectVent Pro 4 x 6-5 8 Galvanizedl Adjustable Roof Flashing for Roof Pitch of 0 12 - 6 12 is a component that is used in a typical venting installation. The adjustable roof flashing is used to weather proof the penetration of vent pipe through the roof. A storm collar is required. Roof Flashing is based on a pitch of the roof which should be between 0 12-6 12. Roof flashing is made of galvalume.ADA Compliant: No Depth: 21-1 2 Finish: Galvanized Fuel Type: Gas, Liquid Propane Material: Aluminum, Galvanized Steel Pipe Class: Direct Vent Pipe Inside Diameter: 4 x 6-5 8 Pipe Shape: Round Pitch: 0 12 - 6 12 Style: Contemporary Modern UL Listed: Yes Weight: 15 Width: 19-1 4