The 3M Pt4rmb* Round Mounting Bracket is a galvanized steel bracket designed for use with the Pt4rd fire barrier. It has a 3-hour fire rating and is suitable for pipe sizes not applicable. This red bracket weighs 0.4000 lbs and measures 6.000 inches in length, with a depth of 0.400 inches. Made by the trusted brand 3M in the UK, this mounting bracket is essential for facility and worksite safety in fire protection applications.