20x25x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack ventilation/air-conditioning These white frocks are ideal

These white frocks are ideal for non-hazardous work environments where you need reliable liquid and particulate protection

It is suitable for both indoor and outdoor growing but is most recommended for indoor use for crops requiring a lot of water

The concentrate is made from 100% pure

highly effective fertilizer

This filter handles chloramines — not just chlorine — which most cheap filters miss

20x25x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack ventilation/air-conditioning These white frocks are idealImportant 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