20x25x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack growing-accessories Each tester is ideally suited

Each tester is ideally suited for the rigorous demands of water quality professionals

the area to be treated should be watered before application and for several days after application

(best for thicker oils)

1" corrosion resistant brass ball valve

(1000) Top-of-the-line pelleted Butterhead lettuce seeds

20x25x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack growing-accessories Each tester is ideally suitedImportant 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