PRE-formance™ Pre-fabricated HomeRunner™ Junction Box

HomeRunner™ Junction Boxes are designed specifically for commercial construction applications to provide a spacious, flexible junction box for terminating home runs and other electrical wiring.  Its patented clamping design and flexibility make it the most convenient, labor savings junction box available.

Sizes 8" x 8" x 3" and 12" x 12" x 4"
Material Steel
Covers Surface mount or flush mount
Cubic Inch Capacity 177 cu. in. or 544 cu. in.


  • Patented clamping system - provides maximum flexibility and maximum grip; third party certified for use with AC, MC, MCI-A or non-metallic sheathed cable
  • Welded steel construction - provides strong, dependable service and large cubic capacity for ease of wiring
  • Combination eccentric knockouts - on sides for quick and easy access, combination knockouts in the back of the box are ideal for applications where joist spacing is too tight for side entry
  • Terminal cup washer and flanged nut - quick, easy service ground termination or attachment of grounding bus bar
  • Two cover options - square for surface mounted applications or oversized for flush mount applications
  • Extensive mounting flexibility - pre-drilled holes in side and back for direct mounting or for mounting bracket (purchased separately)
  • Far side support screws on quickly and easily and is perforated which allows for adjustment in dual thickness, fire rated walls; shipped standard with 8" x 8" x 3" models