(2) MD1-0022 True HEPA Filter with (4) MD1-0023 Activated Carbon Pre-filter, Compatible with Vornado Air Purifier Model AC300, AC350, AC500, AC550, PCO200, PCO300, PCO375DC, PCO500, PCO575DC

Compatible with Vornado Air Purifier MD1-0022 and MD1-0023 Fits AC300 AC350 AC500 AC550 (HEPA+Carbon Pre-Filters)/ PCO200 PCO300 PCO500 PCO375DC PCO575DC (HEPA Only) Air purifiers | H13 Grade True HEPA Filter (MD1-0022) captures 99.97% of airborne particles down to 0.3 microns in size, creating fresh and purified air for you and your family | Activated Carbon Pre-Filter (MD1-0023) Traps larger particles in the air like dust, hairs, pet fur, lint, and absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOCs | Indoor air can be full of asthma and allergy triggers, our MD1-0022 true HEPA filter helps filter contaminants out of your space and contributes to cleaner, healthier air in your lungs | Two (2) MD1-0022 HEPA Filters + Four (4) MD1-0023 Carbon Filter included, it recommend to replace your filter every 6(pre-filter)-12 months(HEPA) to keep your machine fresh and clean