About Ø 125 mm.
Exhaust and supply valves with a diameter of Ø 125 mm. are made of synthetic materials or metal. The valves with clamps are perfectly suitable for spiral ducts and concrete ceilings. The valves with a connection bus are suitable for flexible ventilation ducts and dropped ceilings. Furthermore, the valves are white and steplessly adjustable.
Should you have any questions, please do not hesitate to contact us.