Oatey 3-4" GALV ROOF FLASHING

Exclusive 1-piece construction insures a positive leakproof installation every time. Elastometric collar allows the vent stack plenty of room for expansion and contraction. Glavanized 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, and remains perfectly flat on the roof. No. 11815: 1-1/2" to 3", base size: 14-1/2" x 10-3/4" No. 11816: 3" to 4", base size: 15-1/2" x 12"