20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Water Treatment Apply as a drench once

Apply as a drench once a week thereafter to ensure full control of root-based pests

ventilation and cooling devices

HI7061-023 is the GroLine general purpose cleaning solution that can be used for a variety of applications

It is designed to be mounted outside of the space to be monitored

Spring loaded action automatically opens blades after each cut

20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Water Treatment Apply as a drench onceImportant 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