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RACO 400 Gangable Steel Switch Box, 3 in. x 2 in., 1-1/2 in. Deep
The RACO gangable steel switch box is a 3 in. x 2 in. device box built 1-1/2 in. deep for conduit wiring installations. This gangable box is suited for residential and light commercial rough-in wiring where multiple switches or devices are ganged together in a single wall opening. It features three 1/2 in. knockouts for conduit entry and integrated plaster ears that keep the box flush and secure against the wall surface. Constructed of steel and UL Listed, this box is designed to gang together with additional RACO boxes for multi-device switch installations.
Key Features
- Trade Size: 3 in. x 2 in. footprint with a 1-1/2 in. deep interior for standard switch and device installations.
- Durable Construction: Steel body construction provides strength and long-term durability in conduit wiring systems.
- Gangable Design: Gangs together with additional matching boxes to create multi-gang configurations for switches and devices.
- Knockouts: Three 1/2 in. knockouts provide multiple conduit entry points for flexible rough-in wiring.
- Plaster Ears: Integrated plaster ears support the box against the finished wall surface for a secure, flush installation.
- No Bracket: Bracketless design suited for conduit-fed box mounting without a wall bracket.
- Conduit-Ready: Designed for conduit wiring systems, compatible with rigid and EMT conduit runs feeding switch and device locations.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Type: Steel Boxes and Covers
- Product Depth: 1.5 in
- Bracket Type: No Bracket
- Wiring System: Conduit
- Gangable: Yes
- Certified Listed: UL Listed
Typical Applications
- New Construction Wiring
- Switch and Device Installations
- Conduit and Raceway Systems
- Multi-Gang Device Box Configurations
- Commercial and Residential Electrical Rough-In
- Residential Switch and Outlet Boxes
- Light Commercial Electrical Wiring
Why RACO?
RACO steel switch boxes are built for dependable performance in conduit wiring systems, with gangable construction and UL Listed compliance that electrical contractors rely on for code-compliant rough-in work. The steel construction and integrated plaster ears deliver a durable, secure installation for switches and devices in both new construction and renovation projects.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Switch Box
- Product Depth:
- 1.5 in
- Bracket Type:
- No Bracket
- Wiring System:
- Conduit
- Gangable:
- Yes
- Certified Listed:
- UL Listed
- Department:
- Electrical
- Product Subgroup:
- Electrical Boxes
- Product Group:
- Boxes & Enclosures
RACO RACO400 – Frequently Asked Questions
1) Will a RACO 400 box work for NM/Romex cable, or is it only for conduit?
The 400 is set up as a conduit box. It has three 1/2 inch knockouts for conduit entry and no cable clamps, so it suits rigid or EMT runs feeding a switch or device location. For nonmetallic cable rough-in you would be better off with a box built for that, such as the Allied Moulded P-181 FlexBox 1-gang residential switch/receptacle box.
2) Does the RACO 400 come with a mounting bracket for stud framing?
No bracket. The 400 is a bracketless box meant to be supported by its conduit, with integrated plaster ears holding it flush to the finished wall surface. If you need to nail or screw to a stud, pick a bracketed box instead, or for a steel stud opening look at the Cantex EZ20SB EZ Box 1-gang non-metallic steel stud box.
3) Can I use a non-metallic box instead of the RACO 400 switch box?
If the job does not require a steel box, the Allied Moulded P-181 FlexBox is a 1-gang thermoplastic switch/receptacle box with 18 cubic inches of volume, and the Allied Moulded 2302-NKV is a fiberglass reinforced 2-gang switch box. Both are non-metallic, while the RACO 400 is a steel box with three 1/2 in. knockouts intended for conduit wiring systems. Non-metallic boxes do not provide a metallic raceway path, so confirm your grounding and wiring method before swapping.
4) The RACO 400 has no bracket. What box should I use for a steel stud wall?
The RACO 400 is a bracketless box with plaster ears, intended for conduit-fed mounting rather than stud attachment. For a steel stud application, the Cantex EZ20SB EZ Box is a 1-gang non-metallic steel stud box designed for that framing. It is non-metallic, so it is a different wiring method from the conduit system the RACO 400 serves.
5) How deep is the RACO 400 steel switch box?
1-1/2 inches deep, on a 3 x 2 inch device footprint. That is the shallow end of the standard device box range, so it drops into 2x4 stud walls easily but leaves less room for wire fill. If you are stacking several conductors and a dimmer behind the device, step up to a deeper box.
6) Is the RACO 400 switch box UL Listed for commercial rough-in?
Yes, the 400 gangable steel switch box is UL Listed. It is used in both residential and light commercial rough-in work, typically on conduit and raceway systems for switch and device locations.
7) What is the part number to order the RACO 3 x 2 gangable steel switch box?
Order it as RACO model 400. That is the single 3 x 2 inch, 1-1/2 inch deep gangable steel box with three 1/2 inch knockouts and plaster ears. Each box is one gang, so for a 3-gang switch bank you order three and gang them.
8) What is the difference between the RACO 400 and an adjustable-depth gangable steel box?
The RACO 400 is a fixed 1-1/2 inch deep steel box, so its position in the wall is set by how you mount the conduit. The Thomas & Betts LXWOWC-25 Steel City Adjust-A-Box is also a 1-gang gangable steel box but is built to adjust, which helps when the finished wall thickness is not settled at rough-in. Both gang for multi-device banks.
9) I need a two-gang box in one piece instead of ganging RACO 400 boxes together. What should I use?
The RACO 400 reaches multi-gang configurations by ganging additional matching boxes together, which is why it is listed as gangable. If you would rather install a single two-device enclosure, the Allied Moulded 2302-NKV is a 2-gang electrical switch box in fiberglass reinforced construction from the FiberglassBox series. Note that it is non-metallic rather than steel, so it is not a match if the opening is fed by metallic conduit requiring a steel box.
10) Is the Allied Moulded P-181 a substitute for the RACO 400 in a commercial conduit rough-in?
No. The P-181 FlexBox is a 1-gang thermoplastic residential switch/receptacle box rated at 18 cubic inches, aimed at residential work. The RACO 400 is a UL Listed steel box with three 1/2 in. knockouts specified for conduit wiring, so for a conduit rough-in the steel box or another steel gangable box such as the Steel City Adjust-A-Box is the correct direction.
11) Will a standard switch or receptacle plate fit the RACO 400 box?
Yes. The 400 uses the standard 3 x 2 inch single-gang device footprint, so ordinary single-gang switch and receptacle plates and standard device straps line up on it. Gang two boxes and you need a 2-gang plate.
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Does the RACO RACO400 come with a warranty?
Absolutely. The RACO RACO400 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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