20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack Monterey Lawn & Garden Products Controls fungal diseases including black

Controls fungal diseases including black spot

• Clean your tank and replace your nutrient solution at least every week

and increased tolerance to drought

Moderate Fungus Issues - 150 ml per gallon

Organic Program Compatible – Iron phosphate is approved for use in certified organic production programs

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack Monterey Lawn & Garden Products Controls fungal diseases including blackImportant 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. We also carry 4 7 8 and 5 1 4 inch depth filters,