20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 1 Pack pump Features a user-selectable set-point

Features a user-selectable set-point

Choose Eye Hortilux lamps to raise your lighting system to a new level of performance

it passes over the ONA which guarantees that all odors have been eliminated

Double-jacketed CMh lamp does not require reflector safety lens

plug adapters

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 1 Pack pump Features a user-selectable set-pointImportant 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,