【ONLY COMPATIBLE WITH 400 AIR PURI-FIER】: H14 HEPA replacement filter is compatible with 400 air purifiers. Our fil-ters can maintain the maximum performance of your machine 【ATTENTION】: Our 400 replacement filter is not compatible with the 240 air puri-fier. Please don't buy the wrong model. They are all H 14 but their model is different. Please check the model of your air puri-fier before placing the order 【H14 GRADE HEPA FILTRATION】: Our 400 replacement filters adopt H14 grade HEPA filtration, attaching 99.97% of pollutants down to 0.3 microns in size including dust, pet dander, odors, . Maximum filtration effect meets all your needs 【3-STAGE FILTRATION】: 400 air purifier replacement fil-ter are composed of fine pre-filter, H14 grade HEPA fil-ter and high efficiency activated carbon filter. Attaching dust, pollen, , smokes, take in unwanted odors and VOCs, etc 【EASY TO REPLACE】: Our H14 HEPA replacement filters are easy to assemble. Disassembly and installation can be solved in a few minutes. We recommended replacing the H14 400 fil-ter every 6 months depending on the air quality of your #PASIION #flashlights #FlashlightReview #EDCgear #GearTest - @unit_15jz