The Filtrete 1900 Ultimate Allergen is suited for those with particularly sensitive allergies. In addition to filtering fine contaminants, such as pet dander, and larger particles, such as mold spores, the Filtrete 1900 furnace filter is able to filter tobacco smoke odors.
- Filtrete MPR (Microparticle Performance Rating): 1900
- To optimize filtration, use this air filter up to 90 days (dependent on frequency of use of your furnace or a/c)
Actual Dimensions (in.): 17.7 x 17.7