This Polymer Shelving has 4 shelves to hold more items. The Wire Cart can hold up to 1000 pounds to hold more items. The Polymer Shelving is mobile for easier moving. The Wire Cart is 60 x 24 x 63 (L x D x H). The Polymer Shelving is made of dishwasher safe material for easy cleaning. This shelving kit includes 4 posts; 16 collets; and (4) 5" dia. swivel casters with bumpers, 2are locking.