As per the title old bathroom fan on an adjustable arm with ducting out under the soffit keeps the place clear its whisper quiet best of all made for zero pence from bits lying about
I have installed an extraction pipe above my welding bench,with the extraction fan in the roof space about 8’ from the collection end of this pipe,beyond the fan it trunks to the exterior of the shop,the suck is inadequate,if I moved the extraction fan closer to the collection funnel will it be...