20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 2 Pack DUCTWORK Both larvae and adults are

Both larvae and adults are predatory and reduce the need for sprays

No extra buttons to push or dials to turn

poly disposable filters

Directions for use: Pre-soak your rooting media with a 3/4 tsp per gal solution of B'Cuzz and water your cuttings once daily until strong root growth is visible

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 2 Pack DUCTWORK Both larvae and adults areImportant 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,