20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack Chemicals Resistant and lightproof zippers

Resistant and lightproof zippers

For added convenience

pH is the measurement of water quality

Includes mounting brackets

Reapply if it rains within 24 hours of application

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack Chemicals Resistant and lightproof zippersImportant 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,