Appleton GRK-3M, Exp Proof Conduit Outlet Box Cover, Form 3 Gr Cover, 1 PC

Explosionproof Conduit Outlet Box Cover; Type Surface; Installation Externally Threaded; Cover Opening Diameter 4.88 Inch; Material Malleable Iron; Finish Zinc Electroplated/Chromate/Epoxy Powder Coated; Enclosure Class I Div 1 and 2 Group B C D, Class I Zone 1 and 2 IIA IIB, Class II Div 1 and 2 Group E F G, Class III; Used On GR/GRF Conduit Outlet Box; Approval UL, CSA C22.2; Constructional Feature Explosionproof, Dust Ignitionproof, Corrosion Resistant; Applicable Standard NEC/CEC