Using the measurements below and a 3/16” drill bit, drill a total of 8 holes
in the housing flange 1/2” from the flange edge.
1
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 5.
3
Attach all (8) shutter clips with a rivet gun using (8) 3/16” rivets and (8)
3/16” washers. Review the illustrations below for placement and assembly.
2a
Fan
Flange
Shutter
Clip
Rivet
Washer
2b
Rivet
Washer
Fan
Flange
Shutter
Clip
2
15
5
/
8
”
15
5
/
8
”
15
5
/
8
”
15
5
/
8
”
15
5
/
8
”
15
5
/
8
”
18
7
/
8
”
18
7
/
8
”
edge of venturi
2”
