I live on a dirt/gravel road and my house has a lot of dust. We need to change HVAC filters more often than most people. These filters are fairly inexpensive in bulk and clean the air as well as any other filter I've used. I think they live up to their MERV 11 rating pretty well. I will continue to buy them and the bulky packaging is a convenience, especially since 10x20 filters are NOT easy to find.
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