The 14x20/8 filters were new to me and I could not find them locally. The mail service of Filterbuy was a great solution. They were just what I needed and in great condition. Nice work!
My filters are in the ceiling, the ones I got just a little smaller than the original ones. I have to hold it in and close the cover. The original ones stay in place. Otherwise they work perfectly.
I was forced to cut out the diamond pattern from both sides of my 12 X 12 filter because my furnace was being starved of return air. I tried the 13 to 8 Mer first but was unable to tolerate the loud noise coming from registers.