20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack Chemicals The fans create an airflow

The fans create an airflow of 210 CFM

Double seal

For added convenience

Includes mounting brackets

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack Chemicals The fans create an airflowImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,