3M Filtrete 4 inch Furnace FiltersThe 3M 4" Media Furnace Filter provides Filtrete performance for use in whole house air cleaners installed in furnaces or central air conditioners. These filters work in any whole house system that takes a 4" filter. Filtrete furnace filters capture mold spores, pollen, dust, dust mite allergen, and pet dander. They help rid your home of these common allergy triggers and help to keep the air in your home cleaner all year round. When used under normal conditions, replace every year. 3M Media Air Cleaner filters are a universal style filter that will fit a variety of brands and models. With consist air filtration, these 4" media air cleaner filters are an excellent way to keep your home cleaner with less expense.*Please note that the actual width may be up to 4.1875 inches.
Carries 3M's Performance Rating (MPR) of 1550 (equivalent to a MERV 12 rating).
- 1550 MPR provides exceptional performance and ensures clean indoor air for you and your family.
- Electrostatic filtration attracts and captures particles to remove allergens from your home environment.
- Captures 97% of airborne allergens and particles.
- Continuously combats polluted indoor air. Filtrete furnace filters capture bacteria, viruses, smog, and smoke as well as other allergens.
- Will not support the growth of mold or bacteria.
- These media air cleaner filters are designed to fit a variety of air cleaner models and brands.
- Black Mold
Everybody is allergic to Black Mold, because it is toxic. I don''t believe you can filter out that, no matter how great a filter is....it needs to be removed by a professional if you have it in your home. Aside from that...why does Filtrete not assign a Merv rating?
- Black Mold
I'm very allergic to Black Mold. These 4" filters suck up and trap the nasty little spores like a sponge. Living in a Condo unit that is partially underground, humidity control and constant filtration are very important. This filter is being used 24/7 and must be changed sooner than 1 year but I won't use anything else. AchooAllergy.com has great prices and super fast shipping. I was very pleased to find the filter packaged well and damage free when it arrived.