Explosion-Proof Conduit Outlet Box, Style L, Hub Size 1/2 Inch, Hub Type External, Number of Hubs 2, Hub Location (2) Side, Capacity 13.5 Cu Inch, Shape Round, Cover Type Internally Threaded, Cover Opening Diameter 3 Inch, Enclosure Class I Div 1 and 2 Group B C D, Class I Zone 1 and 2 Group IIA IIB, Class II Div 1 and 2 Group E F G, Class III, NEMA 3/4, Material Zinc Electroplated Malleable Iron, Approval UL 886, CSA C22.2, Applicable Standard NEC, Application Pulling of Wires, Wet Location, Constructional Feature Explosion-Proof, Dust Ignitionproof