Ducting For Ceiling Hoods With External Motors
150mm Flat Ducting For Use With External Ceiling Hood Motors
Please only use 150mm flat or round ducting when installing outside cooker hood motors, keep the run as short as possible, we recommend a maximum run of 6.6 meters when running the duct flat and a maximum of 2 x 90° bends, When using the flat roof or pitched roof motor options keep the ducting to a maximum of 5 meters straight up from the cooker hood, remember the more 90° bends and elbows you use the less efficient your extraction will be.
Quick Link Cooker Hoods Ducting Chart For Extractors External Motors
Please never use 4" or 5" ducting on any ceiling extractor fans unless otherwise stated in the instruction manual