20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 4 Pack lighting-&-electrical-components 4% Yucca schidigera Extract (Wetting

4% Yucca schidigera Extract (Wetting Agent)

Two square obeservation windows on the front door

Color Temperature: 3300k

Duct Opening Diameter: 6 inches | Front Plate Size: 9” | Finish: Powder Coat

Mycorrhizal colonization begins within days of application under optimal conditions

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 4 Pack lighting-&-electrical-components 4% Yucca schidigera Extract (WettingImportant 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,