Oatey 12920 Aluminum Standard Base Flashing, 1.25-Inch - 1.5-Inch Rustproof .032 stamped aluminum standard base Non-fading sealing collar Approved for Type B installations Slides over pipe - for pitch to 40 degrees Rustproof .032 stamped aluminum standard base Non-fading sealing collar 18-Inch x 18-Inch bases for code required areas Rated 180F continuous heat