The TVH is a ductable unit, designed to guarantee high in small or medium-sized rooms with nominal air flow rates from 800 to 5200 m3/h. As standard, it is suitable for two-pipe systems, but the availability (as an accessory) of the secondary water coil, which can be installed inside the unit downstream of the main coil, making it also suitable for four-pipe systems. The unit can also be used for horizontal installation in a false ceiling.