Clearancegard overhead clearance bars 104inl clearance bar clearance bars effectively warn drivers against accidental collisions in warehouse, car wash, drive-thru, parking lot and other low clearance applications. Made of sturdy 4in diameter high density polyethylene that is impact resistant. Uv stabilized for protection against fading or cracking. Includes four 1inw 3m scotchlite reflective stripes for high visibility. Purchase optional hardware kit sold separately to attach the chain to the bar with included toggle screws and two 3’l galvanized chains mounting hardware for ceiling is not included. 5 year limited warranty.