20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pumps-and-irrigation-supplies begin new plantings within hours

begin new plantings within hours of application

ADsorption Yield (adsorption with a “d”) is the key

and sturdy stalks and branches to support bigger

Mushroom Flies

Includes 6' power cord and galvanized mounting brackets

20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pumps-and-irrigation-supplies begin new plantings within hoursImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter