Low-Profile heat recovery units specially designed for false ceiling installation (indoors). Aluminium counter-flow heat exchanger up to 92% efficiency (EUROVENT certified), plug-fans with backward curved metal blades and EC motor. Integrated Bypass (100%) for Free-Cooling and Defrost. Suited for airflows up to 2.000 m3/h. Premium pre-configured control system for easy startup with touch screen. The casing is made of 30 mm self-supporting double skinned panels (mineral wool, 100 kg/m3, thermal conductivity 0,037 W/mK). The inner and outer skin are made from galvanized steel. Easy access to all the components via the bottom access over generously sized SLIDING-doors. Filters are accessible from the side as well. Rectangular inlet and discharge connections.