Aardwolf Trestles, models AT-765N and AT-765W, are portable but can also be bolted to the floor (hardware not included). The top rails are covered with UV-resistant rubber, to protect materials. Width is adjustable by 3.9". Model AT-765N is 23.6" wide, while AT-765W measures 39" in width. Both sets of trestles are 78.7" long and 30.1" tall. Aardwolf Trestle Sets have a maximum capacity of 2,204 LBS and are made of steel with a powder coat finish for durability.