For wall or ceiling installation. Set of thermostatic valve, extendable wall pipe for variable wall thicknesses, integrated air filter cartridge class G 3 and fixed external grille. All parts made of impact-resistant plastic, white. Built-in temperature sensor regulates valve plate gap opening depending on the outside temperature in the range of ¿6 degrees C to +20 degrees C. Inside of valve plate is coated with insulating material to prevent condensation. Filter insert is easy to change thanks to removable valve plate, stop for basic position ventilation and minimum volume. Variable volume flow setting by plate adjustment. In accordance with DIN 1946, T.6. Average sound insulation level 30-35 dB.