20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack spl_fluence and make sure to obey

and make sure to obey specific storage and handling requirements from your local regulatory agency

and will not cause burns

sealed glass lens

• Contains fulvic and humic acids

along with lockable doors

20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack spl_fluence and make sure to obeyImportant 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. If you are replacing a 4 3 8 depth 20x20x4 filter