1 inch furnace filter with a MERV 13 efficiency rating. Great for homes whose occupants suffer from severe allergies or respiratory ailments. Provides the greatest protection against the smallest particles.
MERV 13 rating filters everything MERV 8 and 10 cleans including dust, dust mites, mold spores, pollen and pet dander. On top of these, MERV 13 also cleans bacteria and virus carriers, which are smaller in particle size. It also helps eliminate smoke and smog. This filter needs changed often to prevent airflow constriction.
- Replaces all major filter brands
- Made in Texas
- Shipping is always free
- Recommended replacement: every 1-2 months