Narrow width is ideal for busy aisles and two shelves create twice the loading area! 12 gauge shelves have 24 " clearance. Six-wheel design is fully maneuverable with two 8 " x 2 " rigid center wheels and four 5 " swivel corner wheels. Non-marking polyurethane tread prevents wheel marks on your floor. End panels extend 48 " high for extra capacity and are constructed from 1-1/2 " x 3/16 " slats for extra visibility. Capacity 2000 lbs.