HAPF-37 Holmes HEPA Air Cleaner Replacement Filter

Fits Holmes models HAP291 and HAP2914 and is 99.97% effective at HEPA Filtration. This filter measures approximately 5 1/2 H x 7 1/2 ID x 12 1/2 OD and helps remove allergens from the air along with reducing unpleasant odors and capturing fine particulates. For optimum performance, change your filter every 6 to 12 months depending on the air quality in your home or office.