Thanks for your reply well on the fastest setting its 340 M3/HOUR AIRFLOW RATE, it's a silent one anyway but the quieter the better I suppose would u still recommend a larger one say 6 inch ? Thanks
Hi just out of interest as I cannot find this information anywhere believe it or not , if I have a 5 inch extractor fan and a 5 inch carbon filter what size does the ducting have to be?? Would 5 inches be too small to fit? Or is that ok? Does it have to be an inch or 2 bigger? Please help many...