NIBE GV-HR are heat recovery ventilation units equipped with counter flow heat exchangers with a temperature efficiency of up to 92%. NIBE GV-HR 120-400 is for wall mounting. NIBE GV-HR are delivered with counter flow heat exchanger, energy saving fans, EC motors, supply air filter, exhaust air side filter and is complete with a control system with a user-friendly control panel. The elegant display shows instructions, settings and operating information. You navigate easily in the menu, setting the ventilation or getting other information.