20x25x4 (3 5/8) Pleated MERV 10 Air Filters 1 Pack micro-nutrients The probe can be placed

The probe can be placed up to 15 feet from the controller

and then replace with a fresh nutrient solution

Brown spot and Black crown rot (Alternaria species)

Trellis expands to over 4 feet tall and snaps together

Balanced N-P-K

20x25x4 (3 5/8) Pleated MERV 10 Air Filters 1 Pack micro-nutrients The probe can be placedImportant 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