Febreze Air Purifier HEPA Replacement Filter, 1 PackCategory: 1 Final FilterThe Febreze Air Filter is designed specifically for the Febreze Air Purifiers. The built-in carbon pre-filter helps capture larger airborne particles and reduces unpleasant odors, such as those from pets, cooking and smoke. The replacement HEPA-type filter U FRF101B captures up to 99 percent of microscopic particles, two microns and larger, from the air that passes through. They are reliable and dependable and get the job done. Freshen your home or office and get rid of all those household odors quietly and discreetly. Plug one into any outlet to continuously neutralize pet odors, smoke odors and other tough odors. The specially formulated carbon filter odor eliminator lasts up to four months, and the built-in indicator lets you know when the filter needs to be replaced. Choose a room-size corded model, depending on the size of your room and your specific needs. Put one in your kitchen, bathroom or nursery and you'll notice the freshness right away.