3M Filtrete 4 Inch Allergen Media Filter 4-pack

3m Filtrete Allergen Reduction Filter For Media Air Cleaners Are The Smart Choice If You Are Looking To Upgrade Or Retrofit The Air Filter In Your Existing Hvac System. Captures 97% Of Large Airborne Allergens Such As Pollen, Mold Spores, And Dust Mite Debris. The 3m Filtrete 4 Allergen Reduction Filter Contains Electrostatically Charged Fibers, So When Your Furnace Or Central Air Conditioner Fan Is On, Air Circulates In Your Home And Passes Through This High Performance Filter. A Sturdy, Robust Frame Also Provides Long-term Durability And Can Even Easily Replace Collapsible Filters Such As The Aprilaire Space Gard 2200 And 2250 Without Time-consuming Assembly. The 3m Filtrete Allergen Reduction Filter Has An Mpr Rating Of 1550 And Should Be Replaced Every 12 Months. Merv 12. The Filtrete Allergen Reduction Filter Comes In Three Sizes To Fit The Most Common Air Cleaner Systems On The Market Including Aprilaire, Space-gard, Trion Air Bear, And Honeywell. Sizes Available Are 16x25x4 16x