Solid steel construction. Steel cover is finished in RAL 7035 textured light-gray polyester powder paint (except stainless steel). Seamless foam-in-place gasket assures watertight and dusttight seal. Semi-flush cover screws attach cover to frame. A gro und stud is provided. Covers with openings precut for various manufacturers' HMI devices are available in 600-mm sizes. See Covers with HMI Cutouts.