Freetochat
Established Member
I would suggest that you go for a minimum of 4" pipework. I have 2.5" and it is not very good, even over a short distance. I also go for the external locker, to reduce dust and noise. I have my compessor out their as well. Switching is by shower 30amp pull cords, but you will need to direct wire and exclude the nvr switch that are on most extractors now.