20x25x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack bio-organic fertilizer This helps to deter misuse

This helps to deter misuse and abuse of the product

Unfortunately for horses

Pink Bollworm

This can also happen if your pre-filters are clogged

20x25x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack bio-organic fertilizer This helps to deter misuseImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter