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Supply and extract air unit with switchover option for secondary air operation, including gross flow heat recovery unit and heat exchanger for installation under the ceiling. Ready-to-operate decentralised ventilation unit that provides good comfort levels andis used for the ventilation of internal spaces such as classrooms, conference rooms and day nurseries. For more information see: https://www.trox.de/en/ceiling-units/x-cube-schoolair-d%C2%A0%C2%A0-5bc4e1e85687c356. Ventilation units for installation on the façade in the ceiling area. Please note: The ceiling ventilation unit variant described is equipped with an integrated individual room control for independent classroom operation. The supplied controllers contain the parameters of the standard control for self-sustaining operation according to our control description. Ventilation unit for schools – ceiling installation – master unit TROX X-CUBE/SCHOOLAIR-D ventilation unit for ceiling installation, for supply and extract air function, and switchover option to secondary air mode (depending on room air quality), heat recovery and heating function for installation in the ceiling area. This EPD includes the environmental data of the product series Schoolair-D. The following represents a specific dataset of the most sold variant in the declared sales year (SAD-HV-0-2-1-BB-W/3363x410x1030/P1-C3-MA-T-0-0-Z-A-HV-R-0.4).