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Page 12
5. Back Draft Shutter System
Vertical Installation
Figure 7 shows an example of vertical installation.
Back Draft Shutter System Fitment to Bell-mouth Adaptor
This back draft shutter system cannot be installed in eave type installation.
Figure 6
Figure 7
Back draft shutter system
Bell-mouth adaptor
Fit exi-duct over shutter assembly
Tape over anges
100mm pipe
to fan
Direction of
airow
To fan
IMPORANT
If shutter system
is mounted in the
horizontal position,
shutter shaft should
be vertical.
Part number: 150 MMBDSS
Back draft shutter system
Tape over anges
Air ow
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