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EXISTING CONSTRUCTION INSTALLATION INSTRUCTIONS (continued)
1. Remove existing fan.
2. Measure the opening to ensure it is large enough to
accommodate the 10-1/4 in. x 10-1/4 in. dimensions
of the new fan housing (A).
3. If this fan is not replacing an old fan, be sure to cut a
10-13/16 in. x 10-1/2 in. opening for the fan housing (A).
NOTE: Make sure one edge of the opening is flush
with the joist for installation from below.
4. Remove the screws that attach the duct connector to the fan
housing (A), setting them aside to use again later, and then
remove the duct connector from the fan housing (A).
Insert the fan housing (A) into the opening cut in the drywall.
NOTE: Install from above with suspension brackets
(attic accessible) only if unable to attach directly to
the ceiling joists.
5. If spacing between joists is 12 in. apart, use 4 long wood
screws (AA) to attach the fan housing (A) to the ceiling joists.
CAUTION: Allow for the thickness of the ceiling board
used in your application. Do not flush mount to the joist.
The flange should be flush with the ceiling board.
1
2
3
4
5
Joist
0.24 in.
Ceiling
board
8
A
Duct
connector
A
AA
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