Telescopic valve type 400 - white external grille - Bulk without bag / suspension

With a telescopic valve you get a complete solution for natural ventilation in your home. A complete telescopic valve with soundproof wall duct, insect screen, external grey, red or white louvre, internal white wall valve with cord pull, dust filter and condensation-insulated cover.

Used for wall thicknesses from 260-400 mm. Can be extended with a 20 cm extension tube. Sound reduction in closed position is 45 dB and in fully open position is 26 dB.

Note when mounting:
It is best to install telescopic valves in the exterior walls – approximately 150 mm from the ceiling to the center hole. There should be two valves per room, depending on the size of the room. The valves should always be placed opposite each other so that the air circulation runs smoothly. If possible, the valves should be placed on the west and east sides of the house, since the wind in Denmark mainly comes from the west.