Hazardous Location Mounting Hardware, For Use With HFX Series, Mounting Style Ceiling, Overall Length 5 1/4 in, Overall Width 5 1/4 in, Overall Height 4 in, Material Aluminum, Includes Splice Box And 3/4 in Hanger, Standards Class I, Division 1 and 2, Groups C, D, Class II, Division 1 and 2, Groups E, F, G, Class III, Class l, Zones 1 and 2, Groups llB, llA, CSA Certified, UL Listed