HAZARDOUS LOCATION CONDUIT OUTLET BOXES COPPER FREE ALUMINUM. WITH PVC COATING AND PURPLE URETHANE INNER COATING. GR-PC SERIESClass I, Div. 1 & 2, Groups B, C, D.Class II, Div. 1, Groups E, F, G.Class II, Div. 2, Groups F, G.Class IIINEMA 3, 4 X, 7 CD, 9 EFG.ExplosionproofDust-IgnitionproofRaintightWet Locations PVC Coating: 40 mils minimumPURPLE Urethane: 2 mils minimumPressure sealing sleeves on conduit openings.Diecast copper free aluminum.Saline chamber test according to ASTMB117Paint adhesion test according to ASTM3359Resistance to mechanical impacts to the body according to IK09, thanks to its design that does not have elements susceptible to breakage.O-Ring Neoprene provide raintight fit.Green ground screw included.NPT thread for use with RIGID conduit.Include chain to hold cover to the body.Manufactured in compliance with:UL 886, UL 1203.CAN/CSA-C22.2 No. 30NEMA RN-1 DOWNLOAD SPEC SHEET