20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack Nutrients and Supplements - Cup detaches from handle

- Cup detaches from handle for easy cleaning and can be used without handle to measure milliliters

120 x PotPro™ | 8" Tall (2 Gallon)

storage of dangerous chemicals

Incredibly potent—a small amount goes a long way

From a $/pint perspective

20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack Nutrients and Supplements - Cup detaches from handleImportant 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