20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack Reflectors & Grow Lights Very High Aerodynamic Efficiency

Very High Aerodynamic Efficiency

At SupremeAir we buy only the premium 20% of any carbon produced

24 Hour Timer (on/off with inverse function)

Banknote Size Length/Width - Length 110mm-185mm / Width 60mm - 90mm

Nordic Pure 20x24x1 MERV 14 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack Reflectors & Grow Lights Very High Aerodynamic EfficiencyImportant 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