Patented Locking Device Holds Platform Securely in Place Durable, heavy gauge all-steel welded construction Six 4" Ball Bearing Rubber-Tired Casters Full Front End Platform Bumpers 3" Deep Recessed Top Tray Large Compartments for Linens or Supplies (Adjustable Shelves) Specifications: Overall: 18" x 58" x 41" Platform: 18" x 48" Open Area: 18" x 31" Supply Compartment: 18" x 18" x 36" Handle folds down, platform folds up to store in 24" x 30" space