Six-tier box locker is made of heavy-gauge steel and offers tamperproof hinges. Each compartment measures 12" wide x 18" deep x 12" high. Vertical louvers provide ventilation. Locker includes number plates for locker identification. Each door has a padlock hasp. Locker does not include padlock. Multiple rows of lockers can be ganged with standard nuts and bolts, which are not included.