Systemair VTK-160 Airvent - Fresh selfadjusting air valve,plastic,white

Self-adjusting fresh air vent This self-adjusting fresh air vent has a temperature-sensitive thermostat bulb which regulates the vent plate, adjusting the air gap and air flow according to the outside temperature. When it is set to ‘automatic’ the valve disc reduces the air supply when the outside temperature falls, and increases the flow when the outside temperature rises. Spacers for maintaining minimum air flow are available as an accessory. Supplied complete with a thermostat bulb for temperatures between -5 and +10°C, plus a wall duct and external grille.