Pushbutton/Pilot Light Cover, Constructional Feature Explosionproof, Dust Ignitionproof, Device Type (2) Pilot Light/Pushbutton or (1) Pilot Light, (1) Pushbutton, Material Copper Free Aluminum, Enclosure Class I Div 1 and 2 Group B C D, Class II Div 1 and 2 Group E F G, Class III, NEMA 4/7BCD/9EFG, Used On Standard Contender Body, Approval UL 508/698/1203, Tapped Opening Size 3/4 Inch