Dr Storage A1M and A20M cabinets are suitable for storing items and materials which need a higher humidity level that those meeting the J-STD-033 specification. That will include magnetic tapes, plastic films, electronic and optical devices such as cameras, video equipment, lenses, microfiche. Laboratory equipment and supplies, professional music instruments, collections of stamps, paintings, cultural and historical items, photographs and negatives can also be stored in these cabinets.