C30 and C31 conduit outlet boxes have:

• Taper threaded hubs to provide ground continuity
• Smooth integral hub bushing to protect conductor insulation when pulling
• Threaded cover openings
• Surface covers furnished with boxes
• Neoprene o-ring gasket and green ground screw are both standard
• Cover threads are 16 pitch

GUB & GUBA IEC ATEX Enclosures:

• Threaded construction throughout permits use in hazardous areas
• Covers are provided with a neoprene o-ring gasket to meet NEMA 4 / IP67 requirements for a watertight seal
• GUB enclosures can be factory drilled and tapped to meet IEC requirements for Zones 1, 2, 21 and 22 hazardous areas; GUBA enclosures are offered in a wide variety of conduit entry arrangements
• Internal grounding lug in GUB enclosure provides a means to ground enclosed equipment