Ergonomic top shelf height 34-1/8" (867 mm) for strain-free loading, bottom shelf is 20" (508) from the floor to prevent lifting injuries Vertical handle ensures wrists are in the correct position for pushing and steering No-mark cushion tread wheels absorb impact, reducing vibration and strain 5" (127 mm) all swivel casters provide ultimate maneuverability. 20-gauge stainless steel shelves reinforced for added strength All-welded construction for a stronger structure and easier-to-clean surface Stainless steel is easy to clean and sanitize Leg bumpers protect walls and furniture