This product has a 3 point locking system with 4 keys included. It has adjustable shelves that rest on louvered panels and adjust on 4� centers. The fully welded louvered panels reinforce doors and hold Hook-On-Bins� with a 250 Lbs. capacity. The Hook-On-Bins� by Durham are included. Overall Dimensions (In.) LxWxH: 48.125 x 24.25 x 78 For industrial storage items, a signature will be required to accept the delivery. If the item is not acceptable condition, sign for it as damaged or refuse the shipment. Please visit our Shipping Policy for further information.