Thomas & Betts GASS-2 3/4 IN BOX, COVER & PLUGS, ALUM, XP

The GASS-2 is a 3/4 inch box, so it takes 3/4 inch conduit at the hubs. It ships as a set with the cover and the closure plugs, so unused openings can be sealed without sourcing plugs separately.

It is the wrong tool for that. The GASS-2 is a 3/4 inch conduit outlet box with a cover and plugs, not a device box with receptacle mounting straps. For a residential multi-gang device box use the Cantex EZ Series PVC box; for a weatherproof one-gang receptacle box, the Mulberry Royal Mountie die-cast aluminum box; for a 240V range or dryer outlet, the Pass & Seymour P242RRD.

The GASS-2 is an aluminum explosionproof outlet box supplied with cover and plugs on 3/4 inch hubs. The closest alternatives in the same duty class are Appleton's explosionproof conduit outlet boxes: the GRJ Series malleable iron box (GRJL50) and the GRJS Series universal malleable iron box. Both are explosionproof conduit outlet boxes like the GASS-2; the difference is body material, malleable iron on the Appleton bodies versus aluminum on the GASS-2, which matters where a corrosive atmosphere or a specified material is involved.

Not in a hazardous location. The GRT75 is a malleable iron round conduit outlet box, while the GASS-2 is an aluminum explosionproof box furnished with its cover and plugs. If the opening is a classified area, stay with an explosionproof body such as the GASS-2 or Appleton's GRJ or GRJS Series boxes; the GRT75 suits general conduit work where round body geometry is wanted.

Body is aluminum, not plastic or iron. That keeps the weight down and avoids the rusting you get from an unfinished ferrous box, which is why aluminum bodies get used in damp and corrosive locations. If you specifically want a malleable iron body instead, Appleton's GRJ and GRJS series conduit outlet boxes are the iron option.

No. The GASS-2 is sold as a box, cover and plugs together. You still supply the conduit, fittings and any gasket or sealing compound the install calls for.

Both land on 3/4 inch conduit, so the trade size matches, but the GASS-2 is an aluminum box and a round iron box like the Appleton GRT75 has its own body shape and cover pattern. Treat it as a different box, not a cover-for-cover replacement, and match conduit entries and mounting to the existing run.

If the location is simply wet or exposed rather than classified, a weatherproof box is the usual choice: the Mulberry Royal Mountie is a die-cast aluminum 1-gang weatherproof outlet box. The Thomas & Betts GASS-2 is an explosionproof aluminum box with cover and plugs, built for hazardous atmospheres. Both are aluminum, but the GASS-2 is the one to specify when the drawing calls out an explosionproof enclosure.

The GASS-2 is fixed at 3/4 inch and ships with its cover and plugs, so unused openings are closed off. If the conduit entries do not line up, the Appleton GRJS Series is a universal explosionproof malleable iron conduit outlet box, which is the pattern to look at when you need a different entry arrangement in the same duty class.