Upgraded HEP 500 Air Purifier Filter Cartridges, compatible with Dri-Eaz Defendair F321 or F284 and Mou-nto 500 CFM models, 2 pleated filter cartridges + 2 activated carbon filter

["Wide adaptability: MERV 13 pre filter and activated carbon HEP 500 filter, ensuring a tight fit between the filter and the internal structure of the Air Scrubber, effectively avoiding air from bypassing the filter, fully utilizing the filtering efficiency, and enjoying fresh air.","Multi layer filtration: Using multi-layer filtration technology, it adsorbs small particles in the air with a filtration efficiency of up to 99.7%, purifying the air and protecting the health of family members.","Energy saving and efficient: High quality filters can make your equipment run more smoothly, thereby improving the energy efficiency ratio of the equipment, reducing energy consumption, saving you electricity expenses, and allowing you to enjoy fresh air.","Easy installation: No tools required, just a few easy steps to complete the installation.","DISCLAIMER: This product is a general purpose filter that is compatible with genuine fittings, any brand names or model numbers used in this product are used only to demonstrate product compatibility and any names or logos are registered trademarks of their respective owners.","AFTER-SALES SERVICE:Easy to install, no tools needed, you can finish the installation alone in a short time. If you have any questions, please contact us through Amazon, QCYZTL will reply you within 23 hours."]