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Securing Flexible Duct
Flexible duct must be installed with supports at maximum intervals of 1.5 metres. Flexible ductwork can be
supported by using gaffer or electrical tape. Provided that it does not restrict the internal diameter of the
ducting. Ducting installed looped over hanging beams should be installed in such a manner as to ensure the
changes of direction are gradual. Support of the ducting with the use of hangers may be required, see option 2.
NOTE: Ducting should be kept taut at all times.
Option 1
Secure the flexible duct
to the beam
Option 2
Support flexible duct
by using hangers.
NOTE: Care shall be
taken to minimize
sagging or snaking
of the duct between
supports.
Figure 7 Securing flexible duct
5. Flexible Ducting
Aluminium foil
tape
Aluminium foil tape
Hanger
Page 15
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