I need to extract 247 cubic metres per hour from my bathroom. I will be using a 150mm ceiling fan capable of extracting 250 m3/ph. Can you tell me which ducting system I should use for this? I have a 1.5 metre run. Currently I have 100mm circular flexible hose already installed, I intend to use a 150mm =96 100mm reducing spigot. Do you think this is sufficient or should I increase the hose diameter, to system 125 for example?
If I go larger than 100mm hose I will need to use rectangular flexible hose. It seems that the only rectangular flexible hose options are options available are =93system 125=94 (150mm x 70mm) or =93System
204=94 (204mm x 60mm). You do not appear to stock system 150 (180mm x 90mm) as rectangular flexible hose. Is this correct and what do you recommend?