Thomas & Betts DIH3-1-LM 2" Hub Device Box, 100 Pack

The DIH3-1-LM is a Dry-tite die cast aluminum device box intended for dry, damp and wet locations, and it is rain tight when paired with the appropriate Red Dot covers. The cover gasket seal is what makes the assembly rain tight, so the box alone will not get you there, you have to order the matching cover. It is UL listed.

It is a one gang box with 17 cubic inches of wiring volume. That is the number your inspector will check against conductor fill, and the cubic content is cast into the box along with the UL marking so it can be verified on site after install.

The Mulberry Royal Mountie weatherproof outlet box is the nearest peer: it is a 1-gang die-cast aluminum weatherproof box, the same one-gang count and die-cast aluminum material as the DIH3-1-LM. The DIH3-1-LM is a powder-coated die cast aluminum one-gang box with 17 cubic inches of volume and a threaded hub, and it is rain tight when used with appropriate Red Dot covers.

No. The DIH3-1-LM is a UL listed die cast aluminum device box intended for dry, damp and wet locations, not a classified-area enclosure. For hazardous locations, the Appleton GRJ Series and GRJS Series explosionproof conduit outlet boxes are malleable iron explosionproof designs, and the GRJS is a universal conduit outlet box within that family.

Thomas & Betts sells the DIH3-1-LM as each, and it is offered here in a 100 piece pack with an inner carton quantity of 10. Good for a multi-family or retrofit job where you are setting the same box at every exterior device location; for a single replacement the 100 pack is more than you need.

The box has cast mounting lugs that accept a range of fastening methods, so it can go on masonry, sheathing or strut without an adapter. The internal device mounting plates are securely fastened at the factory rather than clipped in, which is specifically there to stop the loose-plate callbacks you get on cheaper weatherproof boxes.

Yes. The chamber is accessible for pulling conductors, making splices and later system changes, and it is listed for use as a junction box on branch conduit runs. The cast and machined interior surfaces are smooth, which matters when you are pulling THHN through by hand. Keep your splices inside the 17 cubic inch volume for fill.

The DIH3-1-LM is built from A380 aluminum alloy with certified zinc alloy hardware and stainless steel springs, a combination chosen for corrosion resistance, and the body is powder coated on top of that. For a classified or hazardous area it is the wrong box, though, that calls for an explosionproof malleable iron enclosure such as the Appleton GRJ or GRJS series.

The closest alternative we carry is the Mulberry Royal Mountie, also a 1-gang die-cast aluminum weatherproof outlet box. If the box is going inside a dry residential wall and does not need a conduit hub, a Cantex EZ Series PVC multi-gang box is the simpler choice. For a 240V range or dryer outlet, neither fits the application, use a Pass & Seymour P242RRD range and dryer box.

The Cantex EZ Box series is a PVC multi-gang residential outlet box, so it covers interior multi-gang rough-in. The Thomas & Betts DIH3-1-LM is a single-gang die cast aluminum box with a threaded hub, used as a junction box for branch conduits and as an accessible wiring chamber for splices.

No. The P242RRD is a thermoplastic range and dryer box built for a specific appliance outlet application. The DIH3-1-LM is a powder-coated die cast aluminum one-gang device box with a threaded hub and 17 cubic inches of volume, used for general device and junction work in dry, damp and wet locations.

The Appleton GRT75 is a malleable iron round conduit outlet box, which suits a round box opening. The Thomas & Betts DIH3-1-LM is a rectangular one-gang device box in die cast aluminum with mounting lugs for a variety of mounting methods, so it is the choice when you are housing a wiring device rather than making a round conduit pull.

The published dimensions run 4-9/16, 2-13/16 and 2 inches on the box body, with 3-13/16, 3-1/2, 3-1/4, 1-7/8 and 1-1/2 inch figures covering the mounting lug and hub layout. Match them against the dimension letters on the Thomas & Betts spec sheet drawing before you set your conduit stub-ups, since the drawing is what ties each figure to its axis.