20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 10 Pleated Plus Carbon 2 Pack AC / Dehumidification / Humidification it's likely they can use

it's likely they can use some help in achieving more abundance and vigor

• High cation exchange capacity (CEC) for optimum nutrient uptake

80% relative humidity

The bulbs are made in Germany by an ISO 9001 certified facility

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 10 Pleated Plus Carbon 2 Pack AC / Dehumidification / Humidification it's likely they can useImportant 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,