20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack Water Heaters Chillers or day and night operation

or day and night operation

The filter's increased internal carbon surface area is capable of absorbing significantly more odors and all while improving the overall life of the filter

SPHNIX’s custom media blends remove 99

Mimick real seasonal lighting changes with the MINT LED 1000

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack Water Heaters Chillers or day and night operationImportant 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,