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Southwire Old Work 21 cu in Square Galvanized Steel Electrical Box Gray
Southwire Old Work 21 cu in Square Galvanized Steel Electrical Box Gray

Southwire Old Work 21 cu in Square Galvanized Steel Electrical Box Gray

Galvanized steel construction and 16 knockouts make this box a solid fit for retrofit wiring jobs.
Southwire MPN 52151-SDR-UPC
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Southwire item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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About Product Overview

This Southwire square steel box is built for old work installations, where you're cutting into existing drywall rather than framing new. The galvanized steel construction resists corrosion and holds up in the wall long-term, and with 16 knockouts you've got plenty of options for routing conduit or cable in from any direction. It's UL Listed and rated weather resistant, and the 21 cubic inch capacity gives you room to work with switches, outlets, or junction connections without overcrowding the box.

  • Material: Galvanized steel
  • Shape: Square, wall-mount box type
  • Work style: Old work (retrofit)
  • Capacity: 21 cubic inches
  • Knockouts: 16
  • UL Listed and weather resistant

The Details Specifications

Brand Southwire
Model / MPN 52151-SDR-UPC
UPC 032886302084
Weight 1 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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