Features:1) Can filtrate dust and adsorb the dust, hair, pollen, peculiar smell and funk,smoke and the particle in the air effectively, strongly decompose formaldehyde andother carcinogenic substance caused by fitment of building2) Function and characteristic:a) The machine can be put in level and be hung in wallb) Built-in multi-layer filter (HEPA + activated carbon + nanometer cold catalyst)c) Dimensions: 420 x 163 x 390mm