Metal First Aid Unit Kit Boxes meet rigid government specifications. Their reputation for excellence in design and workmanship is unequalled. Moisture-proofing is achieved with a one-piece gasket and positive pulldown catches. Covers open, for use as shelves. Each kit features a rust resistant hinge pin, a carrying handle and wall mounting hangers. They are all finished in a durable white rust and acid resistant powder coating. Identification as a 6, 10, 16, 24,  or 36 Unit indicates the number of individually wrapped first aid units they can hold.