Instructions / Assembly
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ALL INSTALLATIONS
Remove all packing material, unplug 
and remove blower from fan housing.
Remove wiring panel 
from fan housing.
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For Retrot Installation - 
Skip to Page 3. 
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  Some models only: 
  Select 50, 80 or 110 
CFM based on your room 
size and desired 
air ow.
50 80 110
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Attach damper/duct connector to 
fan housing.
Mount housing to ceiling structure.
TABS
Push connector 
through opening 
from inside of 
housing.
Engage tabs 
and secure with 
screw from 
parts bag.
Make sure bottom of housing 
will be flush with finished 
ceiling.
For proper location using ½” 
ceiling material: Bend out 
housing tabs (on outside of 
housing) to fit against bottom 
of joist.
Secure housing through 
mounting ears with appropriate 
fasteners. If mounting housing 
to I-joist, use wood blocking as 
shown.
NEW INSTALLATION
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HOUSING TABS
I-JOIST
WOOD 
BLOCKING
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Some models only: 
A pair of anges 
may be attached to 
housing if desired 
or required.
Snap both flange pieces 
under rolled-over edge of 
housing (all four sides).










