Atomic 20x20x1 Merv 8 Pleated Ac Furnace Filter - 6 Pack AIR QUALITY: Protects the air in your home ENERGY SAVING: Pleated for increased particle holding capacity and air flow effieciency SYSTEM PROTECTION: Keeps HVAC coils free of dust and allows it to operate at optimal efficiency MERV 8: Filters contaminants like dust, pollen, mold and pet dander Actual Size 19.5x19.5x.75 SUPERIOR QUALITY: Made in the USA from 100% high performance mechanical synthetic media