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53151 Pre Galvanized Square Extension Knockouts Review

3

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Very good

Revainrating 4 out of 5  
Rating 
4.0
🔌 Electrical Boxes, Conduits & Fittings, 💡 Electrical

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Description of 53151 Pre Galvanized Square Extension Knockouts

Drawn construction. Used when you need to add extra wire capacity. Mounts directly on top of the square box. Allows you to add circuits. UL listed.

Reviews

Global ratings 3
  • 5
    2
  • 4
    0
  • 3
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  • 2
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  • 1
    1

Type of review

Revainrating 5 out of 5

Versatile Knockouts Deliver as Promised!

After I put it to the test, I'm pleased to say these knockouts did not disappoint. They're a perfect addition to my electrical boxes, allowing for easy extension and modification of conduits. The pre-galvanized coating holds up well against harsh environments. The only drawback is that they may not be easy to install for those without experience in electrical work. Overall, I highly recommend these square extension knockouts for their durability and practicality.

Pros
  • Easy to install with pre-galvanized finish that provides durability and resistance to corrosion.
Cons
  • The square extension design may limit the range of fitting options for some electrical applications.

Revainrating 5 out of 5

Well made, good fit.

That's what it should be, a standard extension. It includes screws and is made of heavy duty galvanized steel. As always, watch out for sharp edges (like any other box).

Pros
  • UL Listed
Cons
  • Very Expensive

Revainrating 1 out of 5

Not as described for junction boxes

According to the product description it has 1/2" and 3/4" knockouts. It's only 1/2 inch. Each side has three 1/2" holes. I have attempted to return it but this item is non-refundable. If you need 1/2" and 3/4" go to Home Depot. They sell it for less than two dollars a piece.

Pros
  • Used when you need to add extra capacity for cables
Cons
  • Upgrades