Originally Posted by coewar
If you have a large square or rectangular magnet, you can just place it over neighboring holes to cover more than one. And I'm talking about one of those flexible magnets, like you might put on your refrigerator. Maybe some business send them to you for advertisement. They are usually not rigid magnets.
Just for the record, I tried the flexible magnets and they DO NOT work. They all seem to fall off once the smoker gets warm. So the small rigid, thick magnets is what I'm using with 1/2 inch holes. And for times when I have larger holes than I wanted (like the 1 inch holes for the 3/4 inch nipples) I used "bushings" to get the open diameter down to 1/2 inch. Was an easy fix.