This 6 foot Slatted style bench without back is made with thermoplastic coated 11 gauge steel.This frame is 4 x 3/8 inch black powder coated legs. Thermoplastic is environmentally safe. The 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.