Robroy Plasti-Bond REDH2OT® Rigid metal conduit with threaded connection, has a trade size of 3-inches and wall thickness of 0.205-Inch. The 10-ft conduit has an inside diameter of 3.09-inches and outside diameter of 3.585-inches. It has a 2-mil thick interior coating and 40-mil thick exterior coating. Conduit with gray PVC exterior and red urethane interior, has steel construction for durability. Conduit with blue thread protector cap, has traverse area of 7.499-Sq-Inches. It protects conductors from mechanical damage and corrosive attack while maintaining electrical continuity across the assembled joints. Conduit meets ETL, UL 6, CSA C22.2, cULus and ISO 9001 standards.