Feature●[Compatible Air Purifier Model Number] Levoit Core 400S Premium Air Purifier that combines a wide range and high performance●Multi-filtration filter for 99.99% double sterilization, pollen removal, dust collecting, and deodorizing: 1. Electrostatic hepa filter removes over 99.97% of particles up to 0.1 μm of pollen, PM2.5, house dust, bacteria, etc. 2. Certified by the ECARF (European Allergy Research Foundation) to be compatible with patients with respiratory and allergic diseases. 3. The disinfecting rate reaches 99.99%, protecting your familys health. 4. The ARC type activated carbon filter is especially effective in decomposing odors, such as cigarette and sweat odors, pet odors, and dry clothes odor. ⑤ The pre-filter captures large debris such as hair, fiber and dust, improving the life of the filter●Replacement Guidelines: 1. Testing institutes: According to the test of Densitsu Science Jam JEM 1467-2015, the life of the filter is 2 years. Recommended filter replacement is approximately 6-12 months. Estimated if you smoke 5 cigarettes per day. 2. Depending on the conditions of the air used, the type and intensity of the odor, you may need to clean it or replace it as soon as possible●【Easy to Clean】1. To increase the efficiency of the filter and extend its lifespan, every 2-4 weeks to clean the outside of the prefilter with a soft brush or vacuum hose, easily remove hair, dust and large debris. (*Note: Cannot be washed with water)●Size and Weight: (1) Size: 9.6 x 9.6 x 10.4 inches (24.5 x 24.5 x 26.3 cm), Approx. 4.4 lbs (2 kg). 2. If you have any questions, please contact Levoit Customer SupportDescription Levoit Core 400S Air Purifier for both floor and tabletop use