20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack commercial-greenhouse-fixtures (Green = 3

(Green = 3

Perfect for large garden installations

KALIX Humic Acid is a natural chelator and suitable for use in conjunction with all nutrient and feeding programs

Each sensor module supports one temperature and one relative humidity reading

• Product contains mercury—please dispose of properly in accordance with local disposal laws

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack commercial-greenhouse-fixtures (Green = 3Important 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,