Concorde™ Heavy-Duty Lockers, Bank of 3, 36" x 18" x 72", Steel, Charcoal, Welded (Assembled)All welded, heavy duty cold rolled steel construction 16 gauge door frame 20 gauge double wall door with ventilation 22 gauge side panels 22 gauge galvanized steel bottom with ventilation 22 gauge hat shelf Three heavy duty hooks included Extra strong five knuckle 14 gauge hinges 11 gauge hasp with easy padlock accessibility Magnet latch helps keep the door closed Contemporary style ventilated louvers at top and bottom (12 holes of 1" x 1 4") Durable