Honeywell's FC100A1003 is sold as a nominal 16x20x4 media filter. SupplyHouse and ProSupplyDirect both list its actual size as 15-7/8 x 19-7/8 x 4-3/8 in (MERV 11).
| Filter | Part numbers | Actual size (as published) | Notes | Sources |
|---|---|---|---|---|
| Honeywell Home FC100A1003 | FC100A1003, FC100A1003/U (MERV 11) | 15-7/8 x 19-7/8 x 4-3/8 in | Nominal 16x20x4; for Honeywell 16x20 F100 and F200 media air cleaners (per dealer listings). | [1] supplyhouse.com [2] prosupplydirect.com |
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