Captures fine airborne allergens such as dust, smoke, dander, mold, pet dander, and dust mites. Great for Allergies and Asthma. The Filters Plus MERV 8 pleated air filters provide high filtration performance with a low-pressure drop for energy efficiency. The MERV 8 Filters Plus Filter utilize 100% synthetic fibers, high initial efficiency, no chemical binders, and do not absorb moisture. Filters Plus MERV 8 air filters are designed to last up to 3 months. A MERV 8 Filters Plus filter is perfect for your home.