Atomic 14x14x1 Merv 8 Pleated Ac Furnace Filter - Case of 6 Protection for Your indoor air quality Actual Size 13.5x13.5x.75 Pleated for increased particle holding capacity and air flow Protects HVAC system and allows it to operate more efficiently MERV 8 filters allergens like dust, pollen, mold and pet dander SUPERIOR QUALITY:Made in the USA from 100% high performance mechanical synthetic media