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Plastic Old work Box extender Electrical Box

Ratings & Reviews for CANTEX Plastic Old work Box extender Electrical Box

4.3
130
Review
 4.3 out of 5
130 Reviews


77% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these electrical box extenders for bringing outlets flush with new wall surfaces like drywall, tile, and paneling. Most find installation quick and straightforward using just a screwdriver, with many describing the product as well-made and durable. Reviewers consistently report the extenders work perfectly for remodels and depth adjustments, extending boxes by about an inch. Some mention the included screws are too short and require purchasing longer 6-32 pan head screws separately. Despite minor hardware concerns and occasional compatibility issues, the vast majority consider the product reliable and effective for their renovation needs.

Customer review summary generated by AI, including incentivized reviews.
130 Customer Reviews

Retrofit

Would Recommend

Need this for a old audio box, worked perfect!

August 20, 2026
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Great add on for safety

Would Recommend

I added this to our Over-the-Range Microwave Hood outlet, because the cabinet created a gap between the electrical box and the outlet, leaving the wires exposed to the wood and drywall. We feel alot safer not that the wires are enclosed.

August 17, 2026
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Too wide and long

Would Not Recommend

The extender was too wide and too long to fit in my electrical box. It broke trying to squeeze the edges in. What should have been a quick process turned into a lot of cussing and I'm down almost $6.

July 4, 2026
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Perfect Fit

Would Recommend

Worked great to extend the outlet after shiplap project - simple to install.

June 28, 2026
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Worked!

Would Recommend

allowed me to extend an outlet and use uncommon wainscotting

June 22, 2026
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Item was on clearance so may not be available in e

Would Recommend

Item is not very sturdy and broke on useage

June 18, 2026
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-

Would Recommend

Made our outlets fit perfect. Easy to use

June 15, 2026
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Pretty straightforward

Doesn't fit into an old work box. Maybe there's a reason for that, as I'm not an electrician. I'm also not sure what the diagonal holes are for, but again, not an electrician.

June 10, 2026
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Worked as it should

Would Recommend

Worked exactly as expected. No issues

June 7, 2026
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Works exactly as described

Works as described

June 3, 2026
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extending electrical box

Would Recommend

needed to extend our electrical box and this worked fine.

May 29, 2026
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If you need a box extender, this is the one

Would Recommend

Fits as described

May 27, 2026
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Easy to use to fix outlets.

Would Recommend

Easy to use

May 10, 2026
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Makes your sockets stick out a little to much. C p

May 9, 2026
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