MODELS QTREN080 • QTREN110
Page 3
2. Attach
damper/duct
connector.
Snap damper /
duct connector
onto housing.
Make sure con-
nector is flush with
top of housing and
damper flap falls
closed.
3. Install
4-inch
round duct-
work.
Connect 4-inch
round ductwork
to damper / duct
connector. Run
ductwork to a
roof cap or wall
cap. Tape all
ductwork con-
nections to make
them secure and air tight.
INSTALL HOUSING & DUCT
1a. Mount
housing to
joist or
I
-joist.
Use a pliers to bend
housing
TABS out
to 90
0
. Hold housing
in place so that
the housing tabs
contact the bottom
of the joist. The
housing mounts
with four (4) screws
or nails. Screw or
nail housing to joist
through lowest
holes in each
mounting flange,
then through
highest holes.
NOTE: Mounting to
I
-JOIST (shown)
requires use
of
SPACERS
(included) between
the highest hole
of each mounting
flange and the
I
-joist.
SPACER
(use for mounting to I-Joist)
I
-JOIST
TABS
1b. Mount housing anywhere between
trusses, joists, or
I
-joists using hanger
bars.
Sliding hanger bars are provided to allow for accurate posi-
tioning of housing anywhere between framing. They can be
used on all types of framing (
I
-joist, standard joist, and truss
construction) and span up to 24”.
Attach the MOUNTING CHANNELS to the housing using the
SCREWS supplied. Make sure TABS face “up” as shown. Use
the set of channel mounting holes (marked “STD”) to mount the
housing flush with the bottom of the drywall. Use the other set
of holes (not marked) to mount the housing flush with the top of
the drywall.
OR
HANGER
BAR (4)
SCREWS (4)
TAB
Extend HANGER BARS to the width of the framing.
Hold ventilator in place with the hanger bar tabs wrapping
around the BOTTOM EDGE OF THE FRAMING.
NAIL ventilator to framing or fasten with screws (not provided)
through HOLES near nails.
*
To ensure a noise-free mount: Secure hanger bars together
with SCREWS or use a pliers to crimp mounting channels
tightly around hanger bars.
HOLE FOR OPTIONAL
SCREW MOUNTING (4)
STD
MOUNTING
CHANNEL (2)
NAIL (4)
BOTTOM EDGE
OF FRAMING
*
SCREW (2)
