20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 1 Pack Hydro Components 128 x PotPro™ | 6"

128 x PotPro™ | 6" Short (1/2) Gallon)

The all natural ingredients in our formula increase soil fertility and feed soil microorganisms while suppressing soilborne plant pathogens

Leafy Vegetables

Grape Leafhoppers

In case of spill

20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 1 Pack Hydro Components 128 x PotPro™ | 6"Important 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