Nick1c Posted December 9, 2018 Share Posted December 9, 2018 We have three extractor vents in our current house. With the 65mph gusts we have been getting recently the vanes which are there to reduce back flow have been making a fair old noise. Does anyone know if it possible to buy an external fitting with an electronic actuator which releases the vanes from a closed position (or forces sprung loaded vanes open) when the fan is turned on? Link to comment Share on other sites More sharing options...
PeterW Posted December 9, 2018 Share Posted December 9, 2018 I fitted a backflap into one and it virtually stopped it overnight. Replaced the vanes on the outside with just angled vent with mesh so no clattering. Link to comment Share on other sites More sharing options...
Nick1c Posted December 9, 2018 Author Share Posted December 9, 2018 Thanks Peter, The angled vent is easy, but where does the backflap go [and where do you get them]? Two of the ducts are horizontal through walls, the fan for the third one is celling mounted. Link to comment Share on other sites More sharing options...
PeterW Posted December 9, 2018 Share Posted December 9, 2018 You can get them on eBay Manrose Back Flap Link to comment Share on other sites More sharing options...
Nick1c Posted December 9, 2018 Author Share Posted December 9, 2018 Thank you. Link to comment Share on other sites More sharing options...
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