Made-to-Order Dollies fit footed posts and can be used to mount Super Erecta Shelf or MetroMax shelving units. Available in sizes to match every shelf length and depth. Heavy-gauge, riveted construction. Stainless steel mounting hardware to connect the shelving unit is included. Includes vinyl corner bumpers. The caster plate style must be specified at the time of order (B or C plate). The dollies are modified at the factory prior to shipment and casters are factory installed. Please note that Made-to-Order Dollies are non-returnable and orders are non-cancelable. Maximum load capacity for dollies is 1000 lbs. (454 kg), depending on caster selection.