Best Outlet Boxes for Metal Studs: Durable Options for Wiring
If you’re mounting electrical outlets or switches on metal studs, choose an outlet box designed for secure attachment and reliable corrosion resistance. This guide highlights five models that fit standard metal studs, offer sturdy brackets, and provide ample knockouts for wires. Best for remodels, new construction, or ceiling/wall installations where metal framing is used. The top picks balance durability, ease of installation, and compatibility with common wiring hardware.
Buying quick reference:
| Product | Brand | Depth | Notable Features |
|---|---|---|---|
| Qlvily 8 Packs 4 x 2 Inch | Qlvily | 1/2 inch end knockouts | TS side-mount bracket; iron construction |
| Yaocom 8 Pcs 4 x 2 Inch | Yaocom | 1/2 inch end knockouts | Galvanized steel; cULus tested |
| RACO 8235 Eight 1/2″ Knockouts | RACO | 8 x 1/2″ side knockouts | Welded pre-galvanized steel |
| Saysurey 8 Pcs 2-1/8″ Deep 4-Gang | Saysurey | 2-1/8″ depth | 4-gang; galvanized steel; CULUS |
| Fasmov 20 Pack 4″ x 2″ | Fasmov | 1-7/8″ depth | Ten 1/2″ knockouts; galvanized steel |
Qlvily 8 Packs 4 x 2 Inch Metal Box
Best for: small to medium wiring projects where durability and bracket support matter. This box uses iron construction to resist rust and includes a TS side-mount bracket for reliable alignment on metal studs. It features seven 1/2 inch knockouts for flexibility in conduit or device wiring. The end knockouts support quick routing without sacrificing strength.
Why selected: The galvanized iron design and welded bracket provide strong support in stud bays, making it suitable for both retrofit and new-construction applications on metal framing. The robust build helps protect receptacles and switches in areas prone to moisture or humidity.
Caution: Only the box itself is described; ensure you have the correct screws and brackets for your stud type and wall configuration.
Yaocom 8 Pcs 4 x 2 Inch Box
Best for: larger renovations or new builds requiring multiple boxes for outlets and switches. The set includes eight deep boxes with 1-7/8 inch depth, designed for stud-mounted installation on wood or metal framing. cULus testing indicates compliance with common electrical safety standards.
Why selected: The thicker galvanization and deep carrier give extra space for wiring and cable management, which is helpful in confined stud bays. A good choice when you need multiple boxes and robust steel construction.
Caution: Ensure you have the correct depth clearance behind plaster or drywall for the 1-7/8 inch box depth.
RACO 8235 2-1/8-Inch Deep Box
Best for: flush installations with a metal or wood stud bracket. This 4-inch square, 2-1/8 inch deep box features a TS style bracket and welded construction from pre-galvanized steel. It accommodates multiple devices and is intended to enclose wiring, switches, and receptacles.
Why selected: The combination of a consistent weld and side studs ensures stability in tight wall cavities, especially where flush mounting is required. It’s a solid choice when space behind the wall is limited but wiring needs ample room.
Caution: The product focuses on durability; verify that the included mounting provisions fit your wall structure and device layout.
Saysurey 4-Gang 8 Pcs Box
Best for: high-volume wiring projects needing multiple gang boxes with consistent quality. This 4-gang, 2-1/8 inch deep box includes knockouts and a galvanized steel frame. It provides flexibility as a 2-gang or 4-gang configuration based on space and device needs.
Why selected: The pack’s consistent build quality and UL-style testing support long-term performance in walls with dense stud layouts and multiple receptacles.
Caution: The listing notes a large set; confirm package contents and ensure you have mounting screws compatible with your studs and device lineup.
Fasmov 20 Pack 4″ X 2″ Box
Best for: large scale projects or ongoing repair work where many outlet boxes are needed. This pack includes 20 boxes, each 4″ x 2″ with 1-7/8″ depth and raised ground. It uses galvanized steel and offers ten 1/2″ knockouts for flexible conduit routing.
Why selected: The high quantity makes it economical for contractors or DIYers planning multiple outlets or switches in a single project, while the raised ground feature supports safe grounding practices.
Caution: The product does not include screw accessories, so you’ll need to source mounting hardware separately.
Buying Guide: Key Considerations For Outlet Boxes On Metal Studs
- Depth and size: Choose a depth that fits behind drywall or plaster without bending wires. Deeper boxes provide space for more conductors and devices.
- Bracket type: TS side-mount brackets offer stable mounting on metal studs; ensure compatibility with your stud spacing.
- Material and finish: Galvanized or pre-galvanized steel resists rust and corrosion, ideal for damp or outdoor-friendly installations.
- Knockouts: Check the number and location of knockouts to support conduit routing and wiring configurations. End knockouts can simplify edge wiring.
- UL/CULUS testing: While not a warranty, listings indicate compliance with standard electrical safety practices for common installations.
- Quantity and budget: For large projects, consider a pack size that minimizes trips to the hardware store while meeting your device needs.
- Ease of installation: Look for pre-punched knockouts and straightforward mounting access to reduce installation time on busy job sites.
- Limitations: Some listings may not include screws or accessories; factor in additional purchase requirements when budgeting.
FAQ
- What is the most common depth for metal stud boxes?
Depths around 1-7/8 inches to 2-1/8 inches are common for residential wiring in stud walls. - Do these boxes fit both wood and metal studs?
Yes, most listed options are designed for wood or metal studs with welded brackets for secure mounting. - Are knockouts field-usable for all conduit sizes?
Knockouts are sized for standard 1/2 inch conduits; verify device and conduit compatibility for your project. - Should I choose a multi-gang box or single-gang for a wall switch cluster?
Choose based on the number of devices and the space behind the wall; multi-gang is more space-efficient in tight rooms. - Is UL/CULUS testing essential?
It helps indicate compliance with common safety standards, but verify that the product meets your local electrical codes. - What if screws aren’t included?
Purchase matching mounting screws separately to ensure proper installation into metal or wood studs.