Rustproof stamped aluminum base allows for easy shaping of flashing;Rated 180F continuous heat and approved for Type B installations;Metal base for pitch from 0-40 or up to 10/12 roof;Self-sealing collar slides over pipe and requires no caulking;Collar will not fade;Do not use petroleum based products or paint on flashing collar;Not for hot-mopped or built-up roofs;For warranty product details, refer to the Oatey Limited Warranty document