You may also like
RACO 8235 4 in. Square Steel Box, Welded, 2-1/8 in. Deep
The RACO 8235 is a 4 in. square welded steel junction box engineered for durable, code-compliant conduit wiring installations in commercial and residential electrical systems. Measuring 2-1/8 in. deep, this box features eight 1/2 in. knockouts plus five 1/2 in. to 3/4 in. combination TKOs, giving installers flexible conduit entry options for a wide range of wiring configurations. A TS bracket allows secure, flush mounting to metal or wood studs, positioning the box precisely at the finished wall surface. Built from welded steel and carrying UL Listing, the RACO 8235 delivers the structural strength and code compliance electricians rely on for rough-in wiring work.
Key Features
- Trade Size: 4 in. square box body sized for standard outlet, switch, and junction box applications.
- Durable Construction: Welded steel body forms a rugged, one-piece housing built to withstand demanding jobsite conditions.
- Depth: 2-1/8 in. deep interior provides ample volume for conduit connections, splices, and device mounting.
- Knockouts: Eight 1/2 in. knockouts and five 1/2 in. to 3/4 in. combination TKOs support multiple conduit sizes and simplify field wiring.
- TS Bracket: Bracket designed for metal or wood stud mounting, enabling a clean, flush installation at the finished wall line.
- Wiring System: Configured for conduit wiring systems, making it a dependable choice for both new construction and remodel electrical work.
- Shape: Square profile provides generous interior working space for terminating multiple conductors and devices.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Type: Steel Box
- Product Size: 4 in
- Product Depth: 2.125 in
- Product Shape: Square
- Drawn or Welded: Welded
- Bracket Type: TS, for Metal or Wood Studs
- Wiring System: Conduit
- Knockouts: 1/2 in;1/2 - 3/4 in Combination (TKO)
- Certified Listed: UL Listed
Typical Applications
- Junction and Outlet Box for Conduit Wiring Systems
- Flush-Mount Installations on Metal or Wood Stud Framing
- Commercial and Residential Electrical Rough-In
- New Construction and Remodel Wiring Projects
- Device and Switch Enclosures Requiring a 4 in. Square Footprint
Why RACO?
RACO builds the 8235 square box from welded steel for long-term structural integrity on the jobsite, and its UL Listing confirms the box meets recognized safety standards for electrical installations. With a TS bracket for flush stud mounting, a 2-1/8 in. deep body, and generous 1/2 in. and combination TKO knockouts, this box gives electrical contractors a dependable, code-ready enclosure for conduit wiring in both new construction and renovation projects. Choose RACO for the consistent quality and reliable fit that electricians count on for demanding commercial and residential installations.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Outlet Box
- Product Size:
- 4 in
- Product Depth:
- 2.125 in
- Product Shape:
- Square
- Drawn or Welded:
- Welded
- Bracket Type:
- TS, for Metal or Wood Studs
- Wiring System:
- Conduit
- Knockouts:
- 1/2 in;1/2 - 3/4 in Combination (TKO)
- Certified Listed:
- UL Listed
- Department:
- Electrical
- Product Subgroup:
- Electrical Boxes
- Product Group:
- Boxes & Enclosures
RACO 8235 – Frequently Asked Questions
1) Will the RACO 8235 4 in. square box mount to metal studs, or is it wood framing only?
Both. The 8235 comes with a TS bracket rated for metal or wood studs, so the same box works on steel framing in a commercial build and on wood studs in residential rough-in. The bracket sets the box at the finished wall line for a flush device mount.
2) What conduit sizes can I land on the RACO 8235 square box?
The 8235 takes 1/2 in. conduit through its 1/2 in. knockouts, and 3/4 in. where you open one of the 1/2 in. to 3/4 in. combination TKOs. Eight of the straight 1/2 in. knockouts plus five combination TKOs give you entries on multiple sides for through-runs and pulls.
3) Is the RACO 8235 suitable for NM cable, or conduit only?
It's configured as a conduit box. The 8235 has no cable clamps and no NM connectors built in, just knockouts, so it is intended for raceway wiring with conduit connectors installed in the field. For a nonmetallic cable job on wood studs, a box with integral NM clamps is the better fit.
4) How deep is the RACO 8235, and will it fit in a 2x4 stud wall?
Depth is 2.125 in. (2-1/8 in.). That sits inside a nominal 2x4 stud bay, which is 3-1/2 in. deep in the real world, leaving room behind the box for conduit runs. It is the deepest standard 4 in. square size, so check it against any shallow furring or metal stud cavity before you set the bracket.
5) I need an outlet box for a wet or outdoor location. Can I use the RACO 8235?
No. The 8235 is a steel rough-in box for dry, concealed conduit work on stud framing and carries no weatherproof rating. For an exterior one-gang point, the Mulberry Royal Mountie weatherproof die-cast aluminum box is the right type instead.
6) What should I use instead of the RACO 8235 for an outdoor or wet-location receptacle?
The RACO 8235 is a flush stud-mounted interior box with a TS bracket for metal or wood studs. For exterior work, use a weatherproof box such as the Mulberry Royal Mountie die-cast aluminum 1-gang weatherproof outlet box, or the Thomas & Betts 2IH3-1 Red-Dot 2-gang conduit outlet box with three 1/2 in. hubs when you need two devices and threaded hub entries rather than knockouts.
7) What is the difference between a welded and a drawn 4 in. square box?
The 8235 is welded, meaning the body is assembled from formed sheet steel with welded seams rather than stamped from a single sheet. Welded construction is how the deeper 2-1/8 in. boxes get their volume; drawn boxes are typically shallower one-piece shells. For a box carrying several conduits and splices, the welded 2-1/8 in. body gives you more working room.
8) Does a cover or device ring come with the RACO 8235?
No. The 8235 ships as the box with its TS bracket. Plaster rings, device covers, and flat blank covers for a 4 in. square box are ordered separately, and the ring depth you pick depends on your finished wall thickness. Conduit connectors are also separate.
9) Is there a nonmetallic alternative to the RACO 8235 for residential rough-in?
Yes. The RACO 8235 is a welded steel box configured for conduit wiring systems. If the job is nonmetallic-cable residential rough-in, the Cantex EZ Box series is a PVC multi-gang residential outlet box. The RACO 8235 remains the choice where conduit is the wiring method and a steel enclosure with 1/2 in. and 1/2 in. to 3/4 in. combination knockouts is required.
10) Can I use the RACO 8235 as a pull or junction box rather than a device box?
Yes, that is one of its main uses. The square 4 in. body at 2-1/8 in. deep gives room to terminate several conductors, and the thirteen available entries let you bring conduit in and out on different sides. Cap it with a flat blank cover when it is serving purely as a junction point.
How fast can I get the RACO 8235 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the RACO 8235 come with a warranty?
Absolutely. The RACO 8235 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the RACO 8235?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the RACO 8235 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.