32"W x 18"D tub shelves are 2.5 deep for the tub shelf depth. 33% more capacity than a standard 24"W x 18"D cart. Has an ergonomic push handle molded into the top shelf. Four 4" full swivel casters, two with locking brake. Molded plastic shelves and legs won't stain, scratch, dent or rust. Assembly required. Color: Black. Three tub shelves suit warehouses, shops, garages, cafes, or offices. HDPE (high-density polyethylene) shelves; PVC legs.