Air filtration systems are devices that are used to remove airborne particles, such as dust, pollen, mold spores, and other allergens, from the air. These systems typically consist of a fan, filter, and air ducts. The fan draws air into the system, the filter captures the particles, and the air is then expelled back into the room. Air filtration systems can be used in both residential and commercial settings to improve air quality and reduce the risk of health problems associated with airborne particles.