Frame mounted aluminum step tool box with extra wide opening. 22"L (side to side) x 23"H x 29"D, 54 lbs. Top step is 11-3/4"W x 24"L. Aluminum boxes provide storage space in conjunction with a frame step. Smooth aluminum box with smooth aluminum door. Completely assembled. Internal mounting brackets, no need to purchase separate mounting brackets. Weather seal and keyed T-locks included. Made in the USA.