4 Inch Flexible Aluminium Ducting x 10m

Name: 4 Inch Flexible Aluminium Ducting x 10m
Brand: National Ventilation
SKU: DUCT 4 INCH 10M PRE CUT
Price: 20.58 GBP
Availability: InStock
Rating: 5.0 (1 reviews)

Manufacturer part number: DUCT 4 INCH 10M PRE CUT

104 in stock

£20.58

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Description

Flexible Aluminium 4" Ducting x 10m
DUCT 4 INCH 10M PRE CUT

Ducting Hints and Tips
Stretch the ducting out as far as possible to create a totally smooth surface. Your duct run should be as short and straight as possible. Length and bends increase air pressure inside the ducting and this is bad for your extractor fan. Extra air pressure makes it harder for your fan to push the extracted air along the duct thus imparing its extraction power.

Ideally, ducting should go straight through the wall to the outside world. If you do have to put bends in the ducting make them as shallow as possible rather than 90 degree elbows. If your duct run is over 4m you should consider using a centrifugal fan as most axial fans simply will not cope with the air pressure.

We recommend the use of duct clamps. These are inexpensive and ensure that the duct has a good tight fitting around the spigot of your fan and grille.