Heavy Duty Mobile Locker/Security Cart is used by postal employees to transport cash register tills, stamps, and other items that require maximum security. Expanded steel sides have holes small enough to keep probing fingers out, but large enough to view contents. Secure with hasp and a padlock. Smaller size is easier to maneuver. Heavy gauge, flattened expanded metal. 3/4" x 1½" diamond shaped openings. Heavy gauge reinforced deck and shelf, 2,000 lb. capacity 6" casters - two swivel, two rigid.