Economical Overhead Door Warning Barriers protect overhead doors from fork trucks and other traffic coming and going throughout each day. Intended for use as a warning system - not a fork truck stop. Constructed with tubular steel uprights and a 4" x 4" wooden beam across the top of the guard. The wooden beam can be easily and inexpensively replaced when damaged. Guard will not interfere with overhead door. Complete unit is painted high visibility OSHA safety yellow. Concrete installation kit available.