My only problem is that The filters are about 3/8 of an inch narrower and a half inch less in height then what was original. It will work but Has to be put in carefully. I did get the order about four days before they said I would, which was nice, because after all the smoke in the west I really needed to change the filter soon. It seems to work well.
I wanted a filter that would fit where the Honeywell 16x4x20 fit before. This filter was barley 4 deep. Pleats not evenly spaced and many not glued on the edges. No way would a leaky thing like this pass a MER 13 test. Would not recommend to anyone.