Appleton Group's explosionproof conduit outlet boxes for NEC and CEC governed locations feature generous interior space, accurately tapped and tapered hub threads for a rigid joint and reliable ground continuity, and smooth integral bushings to protect conductor insulation from damage. They are available in a wide variety of sizes, styles, materials and hub configurations, all designed for ease of installation and reliable safety in locations exposed to explosive atmospheres or flammable dusts. GRJS universal conduit outlet boxes include five threaded hubs and three close up plugs for flexibility. They are explosionproof, dust-ignitionproof and corrosion-resistant for use in a wide range of harsh industrial environments and classified hazardous locations. The compact size makes these boxes ideal for installation in tight space, and they can be used for mounting lighting fixtures when used with a hub cover.