Skip to content
Free Local Pickup Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted American Hardware Brands

Southwire Old Work Octagon Steel Box Extension

Upgrade your electrical projects with the durable Southwire Old Work Octagon Steel Box Extension, designed for easy installation and long-lasting performance.
Southwire MPN 55151-1/2-UPC
Sold Locally Only

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

Typical Store Price i
Typical store price: low $3.99, average $4.59
In-Store Exclusive

This one's worth the trip to the store.

Brands like Weber, Milwaukee, Yeti, and DeWalt restrict where their products can be sold online — and for good reason. In-store buyers get authentic products, full manufacturer warranty, and access to pricing that simply isn't allowed to be advertised on the web.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Transform your electrical installations with the Southwire Old Work Octagon Steel Box Extension. Engineered for durability and versatility, this octagon box extension is an essential component for any renovation or remodeling project. Crafted from high-quality steel, it ensures long-lasting performance while providing robust support for wiring and fixtures.

Key features of the Southwire Old Work Octagon Steel Box Extension include:

  • Height: 4 inches for a perfect fit in various spaces
  • Knockout Size: Designed to accommodate multiple wiring configurations
  • Weather Resistant: Built to withstand various environmental conditions
  • UL Listed: Ensuring it meets rigorous safety standards
  • Octagonal Shape: Offers a modern design suitable for any decor

Easy to install, the Southwire Old Work Octagon Steel Box Extension enables quick adjustments to electrical setups, making it ideal for both DIY enthusiasts and professionals. This extension not only enhances functionality but also provides a neat and organized appearance to your electrical systems.

Don’t compromise on quality and safety; upgrade your electrical installations today with the Southwire Old Work Octagon Steel Box Extension. Order now and experience the difference!

The Details Specifications

Brand Southwire
SKU 3016213
UPC 032886313950
Unit 0
Case Pack Quantity 50 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 2 × 4 × 4
Weight 0 lbs
Cubic Feet 0.00668 ft³
Country of Origin CHINA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare