20x20x4 (True 4.25", aka 20x20x5) MERV 11-MERV 12 "Honeywell" Replacement Air Filter (2-Pack)

20x20x4 (True 4.25", aka 20x20x5) MERV 11-MERV 12 "Honeywell" Replacement Air Filter (2-Pack) Review

Product Feature

• Actual Dimensions: 19-1/2" x 19-1/2" x 4-1/4" (VERIFY ACTUAL DIMENSIONS CAREFULLY)
• MERV 11 Rated Efficiency. "SUPER CAPACITY" Pleat Spacing for Longer Life.
• Fits: Honeywell F25 Media Air Filter 203721, F35 and F35R Media Air Filter FC35A1019
• F100 and F150 Media Air Filter FC100A1011, F200 Media Air Filter FC200E1011
• Also replaces collection cells in electronic models.

Product Overview

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.

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