16x25x4 (True 4.25", aka 16x25x5) MERV 11-MERV 12 "Carrier" Replacement Air Filter (2-Pack) Review
Why do we list a range of MERV values? Because the ASHRAE 52.2 "MERV" test gives varied results. While other filter manufacturers report the highest score (even if it was only achieved on 1 of 100 tests), we prefer to offer a more genuine report. So the filter another manufacturer calls "MERV 12" may in reality not quite deserve that rating. If we list a single value instead of a range, then rest assured that is the true performance every time. As always, our air cleaner replacement filters are 100% Guaranteed to perform as well or better than the OEM filter they replace. Read more...
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