Floor Storage Units mount directly to the floor of your vehicle with only a 6" loss in interior height. Standard depth units are 50" deep and are available in 1, 2 , 3 or 4 drawer units.These fully welded units are constructed of industrial grade 3003-H14, .063 and .125 aluminum with 1/8" thick diamond plate tops that are top load rated at 200 lbs. per square foot.