Medify Air 2-Pack HVAC filter with a MERV rating 14 and HEPA material attracts and removes microscopic particles like dust smoke pet dander pollen and smog particles removing them from the air you breathe. The HEPA-Type filter protects your home removing 95% of airborne particles wihtout impacting the air flow of a furnace or HVAC. Homes with smokers or a wood-burning fireplace should pick MERV 12-13. MERV 14+ are generally for hospitals schools and environments with high air quality requirements. Filter lifetime of three months. Inspired by parents who wanted to provide relief to their daughters suffering from asthma Medify Air purifiers were engineered from the start with top-quality True HEPA H13 filters. Flash forward and Medify has now helped countless schools medical offices and individuals create safe environments with ultraclean air. We offer solutions that are long-lasting powerful yet simple to use. ATTRACTS PARTICLES: Outperforming fiberglass washable and non-electrostatic filters