16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 1 Pack spl_magfan The Magnum 18's inverter technology

The Magnum 18's inverter technology ensures lower operation costs

Made of high-density materials

Elite Root Tonic C provides an optimized liquid concentrate that quenches a growing plant's boundless thirst

Use it to measure on flooring

It is easy to use

16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 1 Pack spl_magfan The Magnum 18's inverter technologyImportant 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,