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24 Pcs 1/2 inch Knockout Seal Electrical Box Knockout Plugs Removable Seals for Conduit Pipe Assorted Sizes to Fit Unused Electrical Box Openings

5.0 (7) Write Review
Free shipping on orders over $29.99

$11.99

$ 5 .99 $5.99

In Stock

1.Style:1 Inch


  • Seamlessly Sealed, Dust & Water Resistant: Crafted from high-quality materials, our 1/2 inch electrical box knockout plugs form a snug fit over standard-sized openings, effectively blocking dust and moisture. This shields internal wiring from environmental damage while extending equipment lifespan
  • Rugged Durability, Long-lasting Protection: Subjected to rigorous testing, our product is wear-resistant and anti-aging. Even under harsh conditions, the electrical knockout punch set maintains stable performance, offering long-term and dependable protection for your electrical box
  • Easy Installation, Versatile Compatibility: Featuring a streamlined design, installation is swift and straightforward. It is equally adept at handling scenarios in industrial settings as well as home renovations. Whether your needs are professional or personal, this knockout seal is up to the task, catering to your diverse requirements
  • Multi-Scene Master: Our knockout seals work equally well in your garage workshop or office building - sealing exposed holes on steel outlet boxes and metal casings like a trusty electrical bandage. Wherever there's an unused knockout, these plugs deliver instant protection
  • Worry-Free Warranty and Support: We offer a one-year warranty and lifetime technical support for our knockout plugs. Our 24/7 customer service ensures prompt responses



4.6 out of 5 stars Best Sellers Rank
  • #63,398 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
  • #63 in Electrical Conduit Fittings
 Batteries required No

Product Description


Larry G.
Reviewed in the United States on March 5, 2025
Fit right in extra opening's in electrical boxes to seal out dirt.
Shayna L
Reviewed in the United States on January 9, 2025
Sturdy and great fit
Harry E. Lindler
Reviewed in the United States on January 5, 2025
Just what I think that I need. Can't wait to try it out.
DwightR
Reviewed in the United States on November 4, 2024
Despite doing careful planning, I sometimes pick the wrong knockout to use on a metal electrical box. When this happens, using foil tape to close off the hole really isn't a terrific option. It's way better to have a proper metal plug to use.A box of 24 of these plugs doesn't cost much, doesn't take up much space and prevents needing to make a special trip to the hardware store to correct that error. It just makes sense to pick one up.
William Hamilton
Reviewed in the United States on October 31, 2024
The display pictures should be updated to match the selected size but otherwise these are of good quality and work as intended.
Alex G. Dulude
Reviewed in the United States on October 28, 2024
These ONLY fit 1” knockouts. The bag is a full bag of 1” knockouts.That said? They’re good quality and they fit tightly. They’re all galvanized, so fit in nicely with indoor boxes, and paint fairly well for outdoor/painted boxes.I got this whole big bag for less than the bag of 5 of them would have cost at Lowe’s. Definitely recommend.
Sue
Reviewed in the United States on October 14, 2024
These are press in caps for large holes in electrical boxes. This fills holes that were knocked out for whatever reason. They are sturdy and well made.