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Exclusive 1-piece construction insures a positive leakproof installation every time. 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, and remains perfectly flat on the roof. No. 11841: 1-1/4" to 1-1/2", base size: 12" x 9"
No. 11854: 2", base size: 12" x 9"
No. 11867: 3", base size: 12" x 9"
No. 11880: 4", base size: 12" x 9"
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