Campatibilty: ⚠ONLY compatible with air purifier models AP-T10 AP-T10-BK, AP-T10-WT. CHECK your air purifier model number before purchase. Part# AP-T10FL Filter Dimension 5.7"x 5.7"x 4.4" inch. Cost-Effective Price: 4 units value pack save much cost for your all year round air cleaning need. Higher level filtration performance for long time using, at last working 6-12 months, It is recommended to replace filters for every 6-12 months. Using an old filter lowers your air purifier’s efficiency. Genuine Filtration Technology : A higher grade material was used, captures most of particles. Improve your indoor air quality to breath and sleep easier, avoid sniffles and sneezing. Trap Household Odors: The activated carbon filter can efficiently absorbs unwanted odors. You'll notice the difference immediately in the air of your home. Environmentally friendly than filters that require more frequent replacement. 100% Quality Guarantee. If you have questions or problems with your Ulrempart filter at any time don’t hesitate to give us a call or E-mail, Ulrempart customer support team are here to help!