Appleton GRHL Series Explosionproof Conduit Outlet Box, Malleable Iron

Appleton GRHL Series Explosionproof Conduit Outlet Box, Malleable Iron

Appleton GRHL Series conduit outlet boxes are explosionproof, dust-ignitionproof enclosures built with a malleable iron body for use in indoor and outdoor classified locations. Furnished with an internal ground screw and O-ring, each box provides access for maintenance, allows connection of different lengths of threaded metal conduit, and permits changes in conduit direction. Standard O-rings deliver a raintight fit rated NEMA 3, 4, and the internally threaded body with externally threaded cover is engineered for tight, rigid joints in Class I, Class II, and Class III hazardous locations.

Key Features

• Durable Construction: Malleable iron body offers high tensile strength and ductility with strong resistance to corrosion, impact, and shock.
• Triple-Coat Finish: Zinc electroplate, chromate, and epoxy powder coat on the body, with a copper-free (4/10 of 1% max.) aluminum cover finished in epoxy powder coat.
• Explosionproof, Dust-Ignitionproof: Rated for Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; and Class III hazardous locations.
• Raintight Fit: Standard O-rings provide a NEMA 3, 4 raintight seal for indoor and outdoor use.
• Threaded Connection: Internally threaded body with externally threaded cover and accurately tapped, tapered hub threads for tight, rigid joints and ground continuity.
• Internal Ground Screw: Standard on every box for reliable grounding continuity.
• Integral Bushing: Smooth, rounded bushing in each hub-type box protects conductor insulation during installation.
• Furnished with Covers: Used with threaded metal conduit for general purpose wiring.

Certifications & Compliance

• Class I, Division 1 and 2, Groups A, B, C, D
• Class II, Division 1 and 2, Groups E, F, G
• Class III
• NEMA 3, 4 Raintight

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Indoor and Outdoor Classified (Hazardous) Locations
• Conduit Access Points for Maintenance
• Conduit Direction Changes and Conduit Run Connections
• General Purpose Wiring with Threaded Metal Conduit
• Industrial and Petrochemical Facility Wiring

Why Appleton?

Appleton GRHL Series conduit outlet boxes combine a malleable iron body with a triple-coat corrosion-resistant finish and an internal ground screw for dependable grounding continuity. Built to explosionproof, dust-ignitionproof standards for Class I, Class II, and Class III locations with a NEMA 3, 4 raintight rating, these boxes deliver code-compliant performance for demanding indoor and outdoor electrical installations.

GRH body-style key: Appleton's GRH family covers several distinct body shapes sharing the same cover/capacity spec — Type L (this listing, GRHL) is a different body configuration than Type LB (see the separate GRHLB50 listing), a back-outlet body style using the same "LB" shape convention used industry-wide for conduit bodies. If you're not sure which body shape your run needs, compare the two listings before ordering — they are not the same part at a different size.