Top shelf is 34? high with a 1-1/2? retaining lip on 3 sides and front lip turned down. Bottom and middle shelves lip up on all 4 sides. All-welded construction features 12 gauge shelves. Powder coated finish. 5? non-marking polyurethane casters, 2 rigid and 2 total lock swivel casters - locks both the wheel and swivel at the same time.