Having felt a cold incoming draught from the bathroom extractor fan I'm looking at adding a back draught shutter to the pipe run.
As usual, nothing is easy. I can have one flap or two.
Advantages of one over the other?
Cheers
Dave R
Having felt a cold incoming draught from the bathroom extractor fan I'm looking at adding a back draught shutter to the pipe run.
As usual, nothing is easy. I can have one flap or two.
Advantages of one over the other?
Cheers
Dave R
noisy things don't bother
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