ZouHwaSo 18 Replacement Filter Compatible with MA Air Puri-fier 18 Series, 3-in-1 Composite Filtration with H13 HEPA Filter, Fine Pre-Filter and Efficient Activated Carbon Filter, Pack of 4

[100% COMPATIBILITY]: ZouHwaSo 18 replacement filter is perfectly compatible with MA air puri-fier 18 series. Our 18 air filter size is 6.89*5.51 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 MA air purifier filter high density pre-filter, with anti-folding, oil, acid and alkali resistance, can intercept large particles of pollutants; HI3 HEPA even spacing, clear pleats, reduce wind resistance, rapid air circulation; High efficiency aotivated carbcn filled evenly, increasing the contact area of gas and aotivated carbcn, improving the performance of air puri-fication and odcr 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, and there are several combination kits for you to avoid the need to frequently buy new filters, 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 months or 2,000 hours. It is worth noting that when you have finished replacing the filter, please press and hold the Filter Replacement Indicator button for 3 seconds. The filter reset indicator light will turn off. [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.