12 Pcs Knockout Seal Electrical Box Knockout Plugs Round Steel Removable Seal Various Sizes for Closure Unused Box Outlets, Compatible with Size of The Conduit Pipe(1 Inch)

I added a smoke stack to my Pit Boss grill, and the holes on the back of the barrel needed to be plugged or covered. After measuring them a few times, I realized these would be the perfect answer.

Good pop in KO seals, use them all the time!

The metal is just strong enough to make solid connection without requiring Herculean effort to install. You may want to pre-bend a couple of pins to make it easier to install.

What was expected

The knockout seal is marked 3/4 on the top, however it measures one inch across on the push-in pins and will not fit a 3/4 inch hole. Certainly you cannot push these in by hand; they just don't fit. I will return as I cannot use.Update: I ordered a 1/2 inch knockout seal from a different supplier and it fitted a 3/4 inch hole perfectly. I understand from reading other reviews that the size represents the size of the conduit pipe and not the hole size. I would suggest that the description is updated to clearly point this out. It might save a lot of returns.

The knockout seals fit as they should. They have a dull, zinc look, similar to the metal electrical boxes, but not shiny at all. But I like the ones I get locally from the "blue" store. They are shiny and clean, and they cost less than half the price of these.

Covers the holes on the electric boxes well.

does the job exactly