Oatey 11816 Roof flashing 3" ? 4" Galvanized All-Flash? 12"x15" base, can be used in commercial and residential applications Patented All-Flash? design allows use on multiple pipe sizes Galvanized base Rated 180F continuous heat and approved for Type B installations Metal base for pitch from 0-40 Self-sealing collar slides over pipe and requires no caulking Patented All-Flash design allows use on multiple pipe sizes. Rated 180 DegreeF continuous heat and approved for Type B installations. Metal base for pitch from 0-40 Degree. Self-sealing collar slides over pipe and requires no caulking. Size 12 in x 15 in