Safco&reg; - Boltless Steel Shelving, 5 Shelves, 48w x 18d x 72h, Black - Sold As 1 Each - Unique construction requires no nuts or bolts and assembles in minutes without tools! Boltless shelving assembles in minutes and can be configured as a five-shelf, 72'' high storage unit, or as a 36'' high workbench. Unique construction requires no nuts or bolts and assembles in minutes without tools! Versatile design allows two different set-ups: a five-shelf, 72'' high storage unit, or a 36'' high workbench. Shelves adjust in 1'' increments for storage flexibility. Steel frame with a durable powder coat finish.