This 4 foot slatted style park bench without back is made with thermoplastic coated 11 gauge steel. This fame is 4 x 3/8 inch with black powder coated legs. The thermoplastic coating will not fade, crack, peel, warp, or discolor for the life of the product. Thermoplastic finish is easily cleaned and is vandal proof. Comes portable but has pre-drilled mounting holes.