I can only blame myself for looking at the name and not looking closely at the characteristics. If you look at the specs, it's NOT 20x25x4. They are actually 19 1/2 x 24 1/2 x 3 5/8. So in my Honeywell air filter they are loose and not sealing well. The ones I buy from Home Depot are actually 20 x 25 x 4 1/4 so they hit like they should. It's too heavy to send back, so I'll use it for 3 months and then buy a new one. other brand which is true size.
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