Conduit Outlet Box Type Hazardous Location Body Style E Hub Size In. 1/2 Capacity Cu.-In. 18 Material of Construction Copper Free Aluminum Color Gray Standards UL 886 CSA C22.2 No. 25 C22.2 No. 30 UL Listed for Class I Division 1 and 2 Groups B C D Class II Division 1 and 2 Groups E F G and Class IIIFeatures:Material of Construction-Copper Free Aluminum Color-Gray Standards-UL 886, CSA C22.2 No. 25, C22.2 No. 30, UL Listed for Class I, Division 1 and 2, Groups B, C, D; Class II, Division 1 and 2, Groups E, F, G; and Class III WARNING: California ResidentsThis product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.California proposition 65 warning