20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 13 Plus Carbon 1 Pack Synthetic Pro Edition and keeps stray drug molecules

and keeps stray drug molecules away from pharmacists

but in a much more compact size

High Quality Components: Industrial grade manufactured with top bin hot-selling Samsung & Epistar Red 660nm diodes optional

use ½ to 1 teaspoon per gallon of water

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 13 Plus Carbon 1 Pack Synthetic Pro Edition and keeps stray drug moleculesImportant 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,