Mounting Body for Contender Series 3-Device Hub Size 3/4 in Hub Style Feed-Thru Material of Construction Malleable Iron Height 8.34 in Width 3.72 in Depth 3.06 in Standards UL 894 UL 1203 UL Listed for Class I Division 1 Groups C D Class I Division 2 Groups B C D Class II Division 1 and 2 Groups E F G and Class III Includes Internal Ground Screw