Product Description: A "roller-bearing" or "clevis hanger" pipe support hanger used to support roof-mounted gas pipes, HVAC piping, electrical conduit, solar piping and other mechanical piping. Unique design absorbs thermal expansion and contraction of pipes thus preventing damage to the roof membrane. Pipes rest on a polycarbonate or steel roller hanger or clevis hanger. The pipe support base is made of stainless steel and all other metal parts are made of hot-dip galvanized steel. Pipestand will accommodate up to a 8" inside diameter pipe or up to 10" outside diameter pipes.