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PVC Old work Box extender Electrical Box

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

4.3
143
Review
 4.3 out of 5
143 Reviews


79% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this electrical box extender for reliably bringing outlets flush with new wall surfaces after renovations like shiplap, tile, or cabinetry installations. Most highlight straightforward installation and appreciate its ability to meet electrical code requirements for safety and non-flammable coverage. The design accommodates varied wall thicknesses effectively. However, several note the included screws run too short to secure the extender properly, requiring separate purchases. Despite this frustration, most customers find it performs exactly as needed for retrofit scenarios.

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

Great product

I bought the boxes for a tile job for the needed adaptation. They were easy to install and provided the spark protection needed.

October 22, 2026
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Would Recommend

Needed these right away to extend boxes for wainscoating. Happy they were in stock.

October 8, 2026
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Easy to install

Would Recommend

Had what I needed to finish the job

October 1, 2026
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Would Recommend

I bought this to help extend an outlet after installing bead board over a wall. It gave me the flush result I needed

September 26, 2026
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Great!!!

Would Recommend

I had a great experience at Lowe’s! The store was clean, well organized, and it was easy to find what I needed. The employees were friendly, helpful, and willing to take the time to answer my questions and help me find the right products. I really appreciate the customer service and the overall experience. Lowe’s has become one of my go-to places for home improvement projects, and I’ll definitely be back. Thanks to the Lowe’s team for making my visit a great one!

September 9, 2026
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Simple and easy

Would Recommend

Super easy to install a perfect fix for those deep recessed existing boxes to make them safe and code compliant.

September 1, 2026
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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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