Product Description: A pipe support with "strut" used to support roof-mounted electrical conduit, solar piping, gas pipes, and other mechanical piping. Unique design absorbs thermal expansion and contraction of pipes thus preventing damage to the roof membrane. Pipes rest on a strut system which is made of hot-dip galvanized steel. The pipe support base is made of polycarbonate resin, and all other metal parts are made of hot-dip galvanized or stainless steel. Pipestand will accommodate up to 2.5" pipe (inside diameter) or up to 3" (outside diameter) pipes.