Fan
Flange
Shutter
Clip
Rivet
Washer
Rivet
Washer
Fan
Flange
Shutter
Clip
1a
1b
IS197-17E
J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com
Page 2/4
Construct structurally sound 77”
square rough opening.
Correct orientation of fan. Drainage
holes down. NOTE: Drainage holes
MUST
be free from obstruction.
77”
77”
ROUGH
OPENING
(Inside Dimensions)
Using the 14 pre-drilled holes in the housing flange attach all (14) shutter
clips with a rivet gun using (14) 3/16” rivets and (14) 3/16” backup
washers. Review the illustrations below for placement and assembly.
Measure and mark the exterior of the venturi 2” from edge of opening as
shown in illustration. These will be your guides for properly installing the
cone in
Step 6
.
edge of venturi
2”
1
2
4”
4”
From the inside of your structure, insert fan into the finished opening.
Interior
of structure
Exterior
of structure
Airflow
Airflow
Airflow
Airflow
3
On the mounting flange measure and mark 4” from each of the 14
pre-drilled mounting holes used for attaching the shutter clips as shown.
4
View from inlet side of fan
Drainage Holes
