16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack additives in an indoor grow

in an indoor grow

Can be used on any plant

Your cuttings will benefit from a clean blade surface that reduces the risk of infection and shock

No more worrying about where to put the unit — I just run the hose wherever I need it

Russet Mites (Eriophyoidea superfamily)

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack additives in an indoor 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,