20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack dis Thanks for purchasing our Pollen

Thanks for purchasing our Pollen Tumbler

Probe Condition

and dust mites

This product is a pH-balancing additive used to increase the pH of nutrient mixes to the optimal range

Flange and pre-filter included

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack dis Thanks for purchasing our PollenImportant 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,