Carlon BH234R 2-Gang Old Work Electrical Box, PVC, Heavy Wall

The Thomas & Betts BH234R is a 2-gang old work box with 34 cubic inches of volume. Under the NEC box fill rules, 12 AWG counts as 2.25 cubic inches per conductor, so 34 cubic inches is a deep 2-gang box that handles two devices plus a typical feed-and-switch-leg arrangement without crowding. It is the heavy wall version, so the wall thickness is built up rather than thin-shell.

It is an old work box, meaning it mounts into a cut opening in finished wall material and clamps to the drywall itself rather than nailing to a stud. That is the whole point of the design: cut the opening, feed your cable, drop the box in, and secure it to the wallboard. For new construction where the framing is open, you would use a nail-on new work box instead.

The BH234R body is PVC, a non-metallic box. Non-metallic boxes are used with non-metallic sheathed cable and do not require bonding of the box itself, since there is no metal enclosure to ground. If your run is EMT or armored cable, you need a metallic box instead so the raceway can be bonded.

Yes. It carries UL file number E11461. For inspectors asking about listing on non-metallic outlet boxes, that file reference is what covers it.

Two gangs, so it takes two devices side by side, a pair of switches, a switch and receptacle, or a duplex plus a dimmer. Standard two-gang device plates line up to it. If you only need one device, a single-gang old work box is the smaller cut.

It is sold each, so you can buy a single box for a one-off remodel cut-in rather than committing to a carton. Order quantity is up to you.

Reference BH234R from Thomas & Betts. That is the manufacturer part number for the 2-gang heavy wall old work PVC box with 34 cubic inches of volume.

Blue, which is the usual color coding crews use to spot non-metallic old work and new work boxes on a jobsite. It is cosmetic once the plate is on, but it helps when you are sorting boxes out of a bin mid-rough-in.