20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack fans-ventilation-ducting Once a feeding insect comes

Once a feeding insect comes in contact with the rosemeric acid

They have rubber feet to reduce noise and vibration and come with a 120V power cord

Blast Off is very effective in both Soil and Hydroponic gardens

odor and VOCs

humidity and CO2 control

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack fans-ventilation-ducting Once a feeding insect comesImportant 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,