Where to find a ducting 'Y' pice with a non return valve??

[HappyHippyDad]

Does anyone know where I can get a ducting 'Y' piece with a non return valve?

I have looked all over the internet and cant find one, perhaps the answer is to use both?

I need one of these:



which has this:



Cheers all...

 

[jaydee81]

think you have to buy the y and back draft shutter separately never seen it as an all in one

 

[HappyHippyDad]

Thanks JD,

Thought that might be the case, but also thought someone must have invented one!!

 

[guest119]

100mm Ducting - Ducting | NoLinkingToThis

 

[Resu]

100mm Ducting - Ducting | NoLinkingToThis

Might be worth reading a post before you reply mate.

 

[ChrisElectrical88]

Buy both and fit the non return valves on top of the fans, not at the Y bend. Had to do a job like this not to long ago. Paid for a inspection of the local building dept at the council to double check how it was done. Passed fine.