Compatible Models -- Our 2 Pack LV-H133 Replacement filter is compatible with LEVOIT LV-H133 Air Purifier ONLY! Replace Part No. LV-H133-RF. NOTE: Not applicable to LV-H134 and LV-H135, Please check your model fit for LV-H133 replacement filter before purchasing. High Quality Filter -- The LV-H133 filter for Levoit LV-H133 Air Purifier is made of high quality material filter System which works for 99.97% of all airborne particles down to 0.3 microns, helps with dust, smoke, odors, pet dander, cooking smell, pollen, VOCs to improve air quality and your health. 3-in-1 Filtration System -- Our high quality LV-H133 air filter for Levoit LV-H133 filter is designed with 3-in-1 filter. HEPA Filter protects from dust, pollen and pet dander; High Efficiency Activated Carbon Filter works for smoke, pet odors, cooking smell, VOCs; Pre-filter attaches large particles such as hair, dust, lint, fibers and pet fur.