DuPont ProClear Ultra 9200 Air Filters, 21-1/2inH x 13inW x 1inD, Pack Of 4 Air Filters

With this DuPont ProClear Ultra 9200 air filter in your homes furnace, you and your family can enjoy cleaner air quality. The micro filtration design helps trap large airborne particles, common allergens and more. Provides micro filtration to trap common household allergens and germs. Electrostatically charged air filter provides antimicrobial protection. Helps reduce up to 91% of larger airborne particles. Designed to reduce up to 13 common airborne allergens. Each filter provides performance for up to 3 months.