16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack chillers-heaters-and-purification Can I use NemAttack indoors

Can I use NemAttack indoors or in greenhouses

5" wide and 7" long

auto/manual operation

Counterfeit Detection

8pcs per HCS-3

16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack chillers-heaters-and-purification Can I use NemAttack indoorsImportant 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 16x20x4 filter