Oatey No-Calk 9 in. W X 12-1/2 in. L Galvanized Steel Flashing Silver

Elastometric collar allows the vent stack plenty of room for expansion and contraction. Galvanized base is made from 24-gauge deep drawing steel extra high with no seams. Easy- to-install, the flashing slips over the vent stack and automatically adjusts to pipe size and roof angle.