20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 4 Pack double-ended appropriately powering off the unit

appropriately powering off the unit in the safest manner possible

and fungus

the larger sibling of Eden C

hydrogen peroxide

Most municipal water systems use chlorine and chloramine compounds to sanitize the water by killing a majority of biological life contained in it

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 4 Pack double-ended appropriately powering off the unitImportant 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,