3M furnace filter products help clear out dust, smoke, smog particles, bacteria and particles that carry viruses. A 3M furnace filter will outperform every other 1 inch furnace and air cleaners, capturing 90 percent of large allergens like mold spores and pet dander. The material will not support the growth of bacteria, mold, mildew or fungi in normal use and will last for 3 months. We carry all sizes of these products as well as custom sizes. We also offer email replacement notification, auto-reorder and home/office delivery services for our 3M furnace filter products.