H13 HEPA Filter Compatible with Medify MA-40 Replacement Filter, 3-in-1 Composite Filtration MA 40 Air Puri-fier Filter Replacement with H13 True HEPA Filter, Fine Pre-Filter and Carbon Filter, 4-Pack

[100% COMPATIBILITY]: ZouHwaSo replacement filter is perfectly compatible with 40 series air purifiers. our air filter size is 17.44*8.11*1.85 inches (manual measurement has some deviation, does not affect the use), please check your required model and size again before placing an order to avoid making a wrong purchase. [HIGH-QUALITY MATERIALS]: ZouHwaSo air purifier filter high density pre-filter, with anti-folding, oil, acid and alkali resistance, can intercept large particles of pollutants; H13 HEPA even spacing, clear pleats, reduce wind resistance, rapid air circulation, can effectively remove 99.97% of 0.3 microns particles; High efficiency activated carbon filled evenly, increasing the contact area of gas and activated carbon, improving the performance of air purification and odor removal. [VALUE FOR MONEY]: ZouHwaSo replacement filter set will provide excellent value for every penny you spend, we use higher quality materials, the product is more durable and more affordable, giving you a value-for-money shopping experience. [REGULAR REPLACEMENT]: With the passage of usage times and time, the cleaning performance of filter will gradually decrease, and even cause secondary air pollution. Therefore, we recommend to replace filter every 4-5 months or 3000 hours. It is worth noting that when you have finished replacing the filter, please turn on the device again, and then press the “FAN SPEED” and “IONIZER” button and hold for 3-5 seconds at the same time until the light goes out. [BUY WITH CONFIDENCE]: When you buy ZouHwaSo products, you will get high quality products and 7*24 hours after-sales service, if you have any questions during the use, please feel free to contact us, we are very honored to serve you.