Thomas & Betts S-48 Device Boxes, Covers & Accessories, 100 Pack

The S-48 is not weatherproof on its own. It becomes rain tight only when paired with an appropriate Red Dot cover, so you need to order the matching cover separately to get a sealed outdoor installation. The box itself is die cast aluminum with an aluminum lacquer finish, and the cover edges are machined clean so the cover gasket seats properly.

The S-48 round box has a 17 cubic inch wiring chamber, and the cubic content is marked right on the box so an inspector can verify fill without a tape or a datasheet. Use that 17 cubic inches against the box fill table for your conductor size, counting devices, clamps and grounds as the code requires. For heavier splice counts or a pull point with multiple branch conduits, step up to a larger box rather than crowding this one.

Yes, the S-48 carries a UL certification, and the UL marking plus the cubic content are cast into the box so an inspector can read them in place. That matters on institutional and commercial work where the box has to be verifiable after the conduit is dressed in.

The S-48 is a UL listed die cast aluminum junction box for branch conduits and is rain tight when used with appropriate Red Dot covers, which covers wet-location work. For hazardous-location duty you need a box built for it, such as the Appleton GRJ Series explosionproof conduit outlet box in malleable iron or the Appleton GRJS Series universal explosionproof malleable iron box. Those are a different class of enclosure, not a finish or size variation on the S-48.

The S-48 is a die cast aluminum round outlet box with an aluminum lacquer finish, 4-1/8 inch diameter and 17 cubic inch volume. The nearest die-cast aluminum peer is the Mulberry Royal Mountie weatherproof outlet box, which is a 1-gang die-cast aluminum box rather than a round box, so it is the choice when the opening needs a rectangular device box instead of a round junction box for branch conduits.

The S-48 measures 4-1/8 inches in diameter, which is the common round conduit body outlet box footprint. Match covers to that 4-1/8 inch body, and for a rain tight exterior application use the Red Dot cover called out for it.

The S-48 is supplied 100 boxes to a pack, sold by the each at 0.68 lbs per box, with an order multiple of 1. That quantity suits a conduit rough-in on a multi-family or commercial job where you are setting dozens of pull and junction points in one run.

Pulling is what it is built for. The S-48 works as a junction box for branch conduits, and its cast surfaces are machined so conductor insulation is not chewed up during the pull. The chamber stays accessible afterward for splices or future changes to the circuit.

If you need a weatherproof box for a single receptacle rather than a round conduit junction point, the Mulberry Royal Mountie is a 1-gang die cast aluminum weatherproof outlet box. For interior residential multi-gang device work in PVC, the Cantex EZ Series box is the different animal entirely, and a round 4-1/8 inch cast box like the S-48 is not a substitute for either.

Yes. The Appleton GRT75 is a malleable iron round conduit outlet box, which is the material swap to consider when the installation calls for iron rather than the S-48's die cast aluminum with aluminum lacquer finish.

The S-48 is a 17 cubic inch die cast aluminum round box intended as a junction box for branch conduits, with clear UL and cubic content markings for inspection. For multi-gang residential device wiring in nonmetallic systems, the Cantex EZ Series PVC multi-gang residential outlet box is the type to specify instead, since it is built as a gangable device box rather than a round conduit junction.

Yes, the S-48 is RoHS compliant, which is what public agency and institutional specs typically ask for on material submittals. Finish is aluminum lacquer over die cast aluminum, silver in appearance.

The cover screws are deep slotted stainless steel, so a standard flat blade drives them and they resist corrosion on damp or exterior installations. The deep slot is there to keep the driver from camming out when you are setting a lot of covers in a row.