Product Overview

A durable steel extension ring designed to add capacity to existing electrical boxes or serve as a surface-mounted outlet box for conduit installations.

Key Features

✔ Heavy-Duty Construction: 1/16" pre-galvanized steel
✔ Quick Installation: Combination screw heads
✔ Versatile Use:

• Expands existing box capacity

• Functions as surface conduit outlet box
  ✔ UL Listed for safety compliance

Technical Specifications

• Dimensions: 4" × 4" × 1-1/2"

• Capacity: 22.5 cubic inches

• Knockouts:

  • 1/2" pre-punched knockouts

  • 3/4" knockouts

• Construction: Drawn steel for consistent quality

Applications

• Commercial/industrial electrical systems

• Retrofits and renovations

• Surface-mounted conduit installations