20x20x4 (3 5/8) Pleated MERV 14 Air Filters 2 Pack Water Treatment fertilizers

fertilizers

UV protection

Canvas Density: 210D

• Replaces up to 20 human workers

By injecting a small amount of solvent into a closed material column

20x20x4 (3 5/8) Pleated MERV 14 Air Filters 2 Pack Water Treatment fertilizersImportant 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 20x20x4 filter