Single Gang Box Extender



Arlington’s non-conductive box extenders, extend set back metal or non-metallic electrical boxes up to 1-1/2 inches, the easy way. They work with any single gang device and most steel and non-metallic outlet boxes, providing a level, fully supported wiring device that’s flush with the wall surface.


  • Prevents steel boxes from arcing and shorting by creating a barrier between the box and device screws
  • BE1 single gang box extenders are trimmable for use in multiple boxes
  • 2-hour fire rating
  • Complies with NEC 2017, article 314.20 for set back boxes
  • Can be installed without removing device wires

Technical Information

Specification sheet
BE1 Line Drawing
Model: BE1
Height: 4.188"
Width: 2.313"
Colour: White
Material: Plastic
Trade Size: 1-Gang

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