Thomas & Betts IH4-2-LM Device Boxes, Covers & Accessories

The IH4-2-LM is a die cast aluminum Dry-tite style box that protects wiring devices, switches, electronic components and terminal blocks in dry, damp and wet locations. It becomes rain tight only when paired with the appropriate Red Dot cover, so the cover is not optional on an exterior opening. It carries a UL listing.

One gang, with 17 cubic inches of volume. That governs your conductor fill, and the UL and cubic content markings are cast right on the box so an inspector can read the capacity without looking it up. For two devices side by side you need a two-gang body instead.

The Mulberry Royal Mountie weatherproof outlet box is the nearest peer: it is also a 1-gang die-cast aluminum outlet box. The IH4-2-LM is a one-gang die cast aluminum box with a powder-coated finish and 17 cubic inches of volume, and its mounting lugs let it be fastened a variety of ways. If a job calls for 1-gang die-cast aluminum in a damp or wet location, either family is in the same material and gang count.

For a classified area, go to an explosionproof box instead. The Appleton GRJ Series conduit outlet box and the Appleton GRJS Series universal conduit outlet box are explosionproof malleable iron boxes built for that duty. The Thomas & Betts IH4-2-LM is a UL-listed die cast aluminum device box intended for dry, damp and wet locations, rain tight when paired with the appropriate Red Dot covers, which is a different application than a classified area.

The published case dimensions are 4-9/16, 2-13/16 and 2 inches, with mounting and hub reference points at 3-13/16, 3-1/2, 3-1/4, 1-7/8 and 1-1/2 inches. Map those against the spec sheet drawing letters before you lay out a run, because the lug spacing is what decides whether it lands on your existing fasteners.

Mounting lugs are part of the casting, so the box fastens directly to a wall, post or strut without a separate bracket, and the lugs accept several mounting methods. The internal device plate is securely fastened at the factory rather than loose in the box, which is what keeps a device from going crooked on a callback.

Yes. It works as a junction box for branch conduits, and the accessible wiring chamber gives you room to pull conductors, make splices and come back later to change a system. Cast and machined interior surfaces are smooth, which matters when you are dragging THHN through a corner.

For a one-gang exterior device box in the same material, the Mulberry Royal Mountie weatherproof outlet box is also die-cast aluminum and one-gang. On an interior residential wall where weatherproofing is not needed, a Cantex EZ Series PVC multi-gang box is the lighter and simpler route. A Pass & Seymour P242RRD range and dryer box is thermoplastic and built for a specific appliance outlet, so it is not a general substitute.

The Cantex EZ Box series is a PVC multi-gang residential outlet box, which is the nonmetallic route for interior residential device work. The IH4-2-LM is a die cast aluminum one-gang box with a powder-coated finish, rugged industrial construction and corrosion resistance from its A380 aluminum, zinc alloy and stainless steel spring materials, so it is the choice where a metal enclosure or exterior exposure is required.

No. The Thomas & Betts IH4-2-LM is a one-gang box. For multiple device positions in a residential interior, the Cantex EZ Box series is a PVC multi-gang residential outlet box. Keep in mind the Cantex is nonmetallic while the IH4-2-LM is die cast aluminum.

They are not interchangeable. The Appleton GRT75 is a malleable iron round conduit outlet box, so it is a round conduit body in iron. The Thomas & Betts IH4-2-LM is a rectangular one-gang die cast aluminum device box with a 17 cubic inch wiring chamber and clean cover edges for gasket sealing with the matching cover. Device plates and covers made for a one-gang rectangular box will not land on the round Appleton body.

For a range or dryer outlet, the Pass & Seymour P242RRD range and dryer box is the purpose-built item; it is a thermoplastic box made for that receptacle. The Thomas & Betts IH4-2-LM is a general-purpose one-gang die cast aluminum device box with a 17 cubic inch volume, used as a junction box for branch conduits and to house wiring devices, switches, electronic components and terminal blocks.

Sold each, one per inner package, with 50 to a master carton. Weight is 0.57 lbs each. It is also RoHS compliant, which matters if you are buying against a public agency or institutional spec.

The IH4-2-LM is the one aimed at ordinary wet and damp locations: it is a die cast aluminum one-gang box, rain tight when used with the appropriate Red Dot covers, with corrosion resistance from A380 aluminum, zinc alloy and stainless steel spring components. The Appleton GRJS Series is a universal conduit outlet box in explosionproof malleable iron, which is specified when the area is classified rather than simply exposed to weather.