3M Filtrete FILTRETE-ULTRA-16x25x1 16 in. x 25 in. Ultra Allergen Reduction Filters
No unnecessary antimicrobial chemicals added; Filtrete filtering material will not support the growth of bacteria, mold, mildew or fungi in normal use.The Filtrete Ultra Allergen Reduction Filter carries a 3M Microparticle Performance Rating (MPR) of 1250 - roughly equivalent to a MERV 11 rating.Attracts and captures microscopic allergens like: Smoke, Pet dander, Household dust, Smog, Bacteria, Particles that carry viruses and Particles that can carry tobacco odors.Filter Change: Every 3 Months.