Non Return Valve for Ventilation Extractor Fan Backdraft Wind Shutter 100-150mm
- UK Stock - Immediate Dispatch
- Free Shipping
- Diameter: 100mm, 120mm, 125mm or 150mm;
- Material: plastic.
Product as described. Quick postage no issue
This non return valve seems to be well made. However, in the wind it clatters a lot, annoyingly! It is marginally better than the spring hinged type, but not much. It would have been better if the flaps were made of a softer material. It arrived on time, so no issues there!
Less moving parts, far quieter than the hinged versions and will probably last longer. Sometimes the simpler solutions are best.