Filtrete F1 Allergen Air Filter: for 310 Sq. Ft. Large Room Smart Air Purifier /
Complete Extended Title Filtrete F1 Allergen Air Filter: for 310 Sq. Ft. Large Room Smart Air Purifier / new version (White) FAPF-F1N-2. It also ensures a tight seal around the edges so that unfiltered air doesn’t bypass the filter, improving efficiency.