Fabricated of corrosion protected steel. Provided with universal mounting slots to accommodate self tapping screws (supplied separately with unit specified) for use with ASI Models: 0402-DZ, 0404-DZ, 0406-DZ, 0410-DZ, 7402-D, 7402-HD, 74022-D, 74022-HD, 7404-D, 7406-D, and 7410-D.