When upgrading or repairing electrical systems, choosing durable, metal electrical boxes is essential for long-lasting performance. This guide highlights five reliable options that fit traditional old-work and new installations, emphasizing rugged construction, knockouts, and ease of use. The selections cover switch boxes, gangable configurations, and galvanized steel designs to help you match the right box to your wiring needs and wall types.
| Product | Brand | Key Feature |
|---|---|---|
| Hubbell-Raco 506 Switch Box | RACO Store | Eight 1/2″ knockouts; gangable for multiple devices |
| 2-1/2″ Deep Switch Box, 1-Gang | Airmont Products Store | Seven 1/2″ knockouts; 12.5 cu in capacity |
| (Pack of 12) 2-1/2″ Deep Switch Box | Airmont Products Store | Pack of 12; same specs as single unit |
| Metal Electrical Junction Box 4×4 | Copkim Store | 8 1/2″ knockouts; 30.3 cu in capacity |
| 4 Pcs 3″ x 2″ Gangable Boxes | Yaocom Store | Galvanized steel; deep boxes for multiple devices |
Hubbell-Raco 506 Switch Box in 3 x 2-Inch Gangable
The Hubbell-Raco 506 is a gangable steel switch box designed for flexible wiring configurations. It supports constructing a box to hold two or more devices and accommodates various conduit types, including NMSC, armored, and flex cable. The box ships with eight 1/2-inch knockouts, making it suitable for multi-device installations and enabling clean, organized wiring in plaster or drywall environments.
2-1/2” Deep Switch Box, 1-Gang
This 2.5-inch deep single-gang metal electrical box is crafted for durability and easy installation. With seven 1/2″ knockouts and four MC cable clamps, it supports a variety of wiring configurations and devices, including switches and receptacles. The unit offers a 12.5 cubic inch capacity, making it suitable for moderate wiring density and use in fire-rated walls when applicable.
(Pack of 12) 2-1/2” Deep Switch Box, 1-Gang
This pack contains twelve 2.5-inch deep single-gang metal switch boxes, ideal for bulk projects, replacements, or multi-location installations. Each box maintains the same basic dimensions and features as the single unit—seven 1/2″ knockouts, four MC clamps, and a sturdy metal construction designed for durability and reliability in wiring applications, including use in 2-hour fire-rated walls where permitted.
Metal Electrical Junction Box 4×4 Deep
This galvanized steel junction box offers a 30.3 cubic inch capacity in a 4x4x2-1/8 inch footprint. It includes eight 1/2″ knockouts and four side knockouts (TKO) for flexible conduit routing. The durable drawn steel construction and corrosion resistance make it suitable for longer-lasting electrical connections and 2-hour fire-rated wall compatibility in many applications.
4 Pcs 3″ x 2″ Gangable Boxes
This set includes four gangable electrical boxes, each approximately 3 inches by 2 inches with a depth near 3-1/2 inches. Crafted from galvanized steel, these boxes feature multiple mounting holes and 0.886-inch diameter knockouts to accommodate 1/2 inch conduit. They are designed for scenarios requiring multiple switches or devices within a single enclosure and offer weather-resistant stability.
Buying Guide: Key Purchase Considerations
When selecting old metal electrical boxes, consider the following factors to ensure a proper match for your project:
- Box Type and Capacity: Choose single-gang, 1-gang gangable, or 4×4 junction boxes based on the number of devices and wiring density you expect. Higher cubic inch capacity helps prevent overcrowding and heat buildup.
- Knockout Configuration: Ensure the number and placement of knockouts align with your conduit and cable routing needs. More knockouts offer flexibility for future changes.
- Material and Finish: Galvanized steel boxes resist corrosion and are well-suited for varying environments, including damp spaces and plaster walls.
- Fire Rating Compatibility: If your walls require fire resistance, verify that the chosen box is approved for use in 2-hour fire-rated assemblies where applicable.
- Depth and Size: Deeper boxes provide more room for wires and devices but require deeper wall cavities. Measure wall depth and existing stud spacing before purchase.
- Gangable vs. Non-Gangable: Gangable boxes enable multiple devices within a single enclosure, reducing wall clutter but requiring careful planning of device layout.
- Installation Ease: Look for included clamps or ease-of-install features to simplify wiring and reduce installation time.
Across these options, the selection balances durability, capacity, and adaptability for traditional electrical work. The listed boxes offer reliable metal construction, multiple knockouts, and configurations tailored to switches, junctions, and multi-device installations.