[Compatibility] For air purifier filters: HAPF600 filter, HAPF600D,HAP615, HAP625, HAP650, HAP675, HAP675RC, HAP725, HAP750, HAP756, HAP759, HAP1625, HAP1650, HAP1725, HAP1750, HAP616B-TU, HAP633-U, HAP8615, HAP8650, HAP8756. Replacement for models: BAP615, BAP625, BAP650, BAP1125, BAP1150, 1175, BAP1225, BAP1250, BAP1300. Replacement for Models: 106633,106643,106653,106569,106853. [High quality material] For hapf600,The product uses PP high efficiency filter paper,compatible with for , acid and , , high melting point, low resistance, high efficiency, high strength, environmental protection, etc. Filtration effect can achieve H12 level. [High Energy and High Efficiency] For Hapf600 hepa filter,Made of organic fibers interwoven, hapf600 carbon filter has a strong ability to capture particles, tiny pore size, high adsorption capacity, high purification efficiency, and water absorption, with a purification rate of 99.97% for 0.3 Micrometre particles. In other words, only 3 out of every 10,000 particles can penetrate for air purifier filters for hapf600 [Value Pack ] Provide customers with enough HEPA filters to replace. For the best filtration effect, we recommend you to replace the old HEPA filter every 3-4 months, and replace the pre-filter once every 1-2 months. Colour: as shown Material: plastic + activated carbon Package Contents: 2 * HEPA filters 4 * Activated carbon filters Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.