This high-efficiency allergen filter by 3M is made for home forced-air heating and cooling systems. Its electrostatically charged fibres capture airborne microparticles (0.3 to 1 micron in size) such as smoke, pollen, mould spores, pet dander, dust, and lint. It has a MERV 11 performance rating and an MPR of 1550. This Filtrete filter reduce up to 30 times more particles than ordinary fibreglass filters. This product was designed to be used in residential areas.