The RF371 is an SL300 Series roof flashing for roofs with a 6/12 to 12/12 pitch. It seals the roof penetration around the chimney pipe and sheds water away from the opening. Choose the flashing that matches your roof pitch. Always confirm the pipe size, approved components and clearances in your fireplace, stove or chimney installation manual before ordering. For lower-pitch roofs, use the RF370 (0 to 6/12 pitch).