Honey-Can-Do 4-Tier Industrial Rolling Bookshelf with Wheels SHF-08838 Rustic Industrial design brings sophistication to your space Bookshelf wheels allow you to move this masterpiece around the room Powder-coated black steel with MDF shelves and bottom steel shelf Reinforced X-frame provides durability 50-lb weight capacity per shelf Dimensions - 40"W x 63"H x 16"D