The supply of fresh air can be received silently through a range of air flow adjustments. Connection to the home network is possible, which means that the product can be used conveniently. Classification explanations Total Width  20kg Aperture for the Delivered Air  Φ150mm Aperture for the Exhaust Air  Φ100mm Filter  HEPA Filter External Finishing  Double pulverulant body plating Installation Form  Filling in of the ceiling, or hanger type Air Flow Adjustment  Two-Phase air Flow Adjustment The simultaneous ventilation of many indoor spaces through the installation of flexible ducts. Diverse selections according to the indoor interior without any external product exposure. The setting up of the strength, weakness, and artificial intelligence according to the use of the building. The low-noise design method. The control is convenient because of the connection to the home network system. The function of sounding the alarm in the case of fire or theft