Creative Solutions Since 1982

Plastic Box Extender Goof Ring Adjusts Up to 1.5" Deep - 1 Gang

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If your electrical box is set too deep into the wall, use this goof ring to extend the box to be flush with the surface of wall, backsplash, or sheetrock. This outlet box extension acts as a spark arrestor for a recessed outlet or switch that needs to be pulled out more from an electric box installed behind granite, tile, cabinetry, or other thick surfaces. With its flexible design and tapered sides, this box extender ring can easily adjust up to 1.5". Goof ring creates a slightly narrow electrical box opening at the surface (3/16" narrower opening than on a standard box) so can be a good solution for tight spots if the electrical box is set back about 1/4" from the surface. (Goof rings are slightly deeper than a regular electric box.) This solution may help in situations where you are installing devices between two obstructions that are slightly too close together.

Note: Narrow electrical boxes don't exist, but if you need skinny wall plates, see narrow outlet covers and switch plates for a variety of sizes.


  • 4-1/4" x 2-5/16" x 1-13/16" deep tapered extender ring is designed slip into 1-gang electrical square boxes.
  • Boxextenders fit into steel or plastic box opening that is 1-7/8" x 2-7/8".
  • top opening of ring is 2-13/16" H x 1-13/16" W; base opening is 2-9/16" H x 1-9/16" W
  • Spark ring slips over box then mounts with your electrical device's screws which typically are just under 3/4".
  • Purchase long screws if needed: 1" electrical screws or 1.5" electrical screws
  • UL listed.
  • Commonly used as an arc shield or spark guard to add depth to a recessed outlet box when your electrical devices are too far back in the wall.
  • Goof ring works with all standard devices - decorator rocker switches, toggle switches, dimmers, and duplex outlets. 
  • Maximum extension is 1.5"
  • Made in USA by Arlington Industries.

Click Electrical Outlets, Light Switches, and Dimmers for Switchplates to find devices in black, light almond, brown, gray, white, ivory, or red.

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Product Reviews

  • D
    Dave Verified Buyer
    4th Apr 2021
    Plastic Box Extender - Perfect

    Had a number of places where the metal box was no where near flush with the drywall so spacers or nuts were required to bring the plug flush, leaving a situation where the plug could short with the metal box given the right conditions.

    This insert easily corrects that situation. I was able to slip the insert over the plug, place the insert in the box an screw the plug in the box screws. I mounted the plug flush with the drywall and protected the electrical connections from ever touching the metal box sides. In short a perfect solution.

  • L
    Lofty Johnson Verified Buyer
    2nd Apr 2021
    extender boxes

    great product

  • R
    Richard Pettigrew Verified Buyer
    20th Nov 2018
    Works great

    Used to extend outlets and switches after installing new backsplash. Worked great and were easy to install.

  • L Verified Buyer
    10th Nov 2017
    Great box; don’t forget to buy screws.

    Box works fantastically for its purpose. However, it does not come with the screws needed to extend it. Be sure to buy some 1.5” 6-32 oval head screws before installing.

  • L Verified Buyer
    12th Sep 2017
    Great Product

    This is perfect for an outlet that needs to be extended. did not work for me only because the drywall surrounding the outlet was poorly cut and the product just went back behind the wall. I might add this application is in a 70's built high rise within wiring crazy hard and inflexible. And the box was not installed correctly back then and to add more to this adventure, the metal stud was far away and old phone and antenna wires were in the way. Unforgiving and above my pay grade. Ended up calling an electrician. Lol.

  • R
    Rebecca Verified Buyer
    29th Aug 2017
    Perfect for my wainscoting

    Used this to safely re-mount an outlet after adding wainscot to my formal dining room wall. Fit great, easy to install.

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