Southwire 54151-R-UPC Old Work 4 Inch Octagon Box

Product Description

The SOUTHWIRE 54151-R-UPC is a 4-inch old-work octagon box designed for ceiling and wall electrical installations. Built from steel, this box supports lighting fixtures, ceiling fans, and convenience outlets in retrofit applications where new construction framing is not accessible. It ships with combo-head fixture cover mounting screws, allowing a single driver to complete the installation. Electricians reach for this box when adding or replacing a fixture box in a finished ceiling or wall without opening the surrounding drywall beyond the cutout.

This octagon box is suited for residential and light commercial retrofit work. Typical applications include replacing a damaged or undersized ceiling box before hanging a new light fixture or fan, or adding an outlet box in a finished wall. The old-work design mounts directly to the existing drywall or plaster without requiring access to structural framing, making it a standard choice in renovation and service work.

Key Features

• Steel construction provides durability in ceiling and wall installations
• Old-work design installs in finished surfaces without framing access
• 4-inch octagon form factor fits standard ceiling fixture and fan canopies
• Compatible with lighting fixtures, ceiling fans, and convenience outlets
• Includes combo-head fixture cover mounting screws for single-driver installation

Compatibility

Designed as an OEM-style old-work replacement box for standard 4-inch octagon electrical box applications in residential and light commercial ceiling and wall installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the circuit at the breaker panel and verify zero voltage with a meter before beginning any box work. Ensure the selected box is rated for the weight of the fixture or fan being supported before mounting. Do not exceed the box fill capacity as calculated per NEC Article 314.

Technical Specifications

• Box Shape: Octagon
• Box Size: 4 inches
• Application: Old Work
• Material: Steel
• Weight: 0.559 pounds
• Unit of Measure: Each

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 54151-R-UPC