20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 4 Pack Pest and Disease Control 4 × 5 Gallon Grow

4 × 5 Gallon Grow Bags

Can be used all the way through flush

The air conditioner filter media will not support the growth of mold or bacteria

Continue to apply at 2 ml/L (8 ml/gallon) through bloom until harvest

Marine Cuisine is truly Seafood for your Garden

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 4 Pack Pest and Disease Control 4 × 5 Gallon GrowImportant 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,