20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 2 Pack Commercial Lighting Optimal Conditions: This predatory mites

Optimal Conditions: This predatory mites do best in warm weather (80° to 110°F) and prefers 30-60% relative humidity (RH)

6MIL Greenhouse Woven Film

Fulvex increases the availability of nutrients and enhances mineral diffusion into root cells without the use of harsh chemicals

Certification: UL1993

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 2 Pack Commercial Lighting Optimal Conditions: This predatory mitesImportant 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,