Garvin Industries 1 Inch Universal non-slip circuit breaker Filler will not fall off of the panel when the cover is removed. In addition to this, the Patented 1 Inch design works with any manufacturers 1 Inch circuit breaker. It doesn't matter what panel is on the jobsite, this breaker filler covers them all. Simply pull back the adhesive strip and snap in place for a permanent install. No more breaker fillers falling off the cover and on to the floor.