56 DucoBox Energy Sky (D275) The Sky really has no limit with this compact ventilation box and its various mounting options. In addition, you save more than 50% on calibration time thanks to features such as automatic calibration, copy function and 100% interchangeability via display. Smart demand control also ensures that the unit operates very energyefficiently. The device is extremely light (19 kg), making it easy to install by one person. Despite its light weight, the unit is still very quiet. With a maximum emission from casing of 54dB, it is among the quietest ceiling units on the market. L/R interchangeable 100% software-based Smart 2-zone control With external valves Low power consumption due to energy-efficient EC motors Patented principle of double by-pass Compact design, lightweight, silent! Flexible, compact, saves you installation time! Dynamic Airflow Filters For maximum efficiency
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