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Certified 06/04/10
3
4
Verify that the U-channels is cut [2] to the appropriate size. This piece of U-channel will be equal to
the opening width.
Insert a small amount of silicone into each drilled hole and insert a wall plug [16] into each hole.
This must be done just before the U-channel installation. Then carefully cut heads off the wall plugs
with a razor blade so there is nothing raised above the surface of the threshold. Place the U-channel in
correct position and secure it with #8 x 1-1/2” truss head screws [18].
Next drill three 3/16” diameter holes in the center of U-channel [2] (centerline groove provided for
convenience), two holes approximately 2-1/2”from each end and one in the middle. Place the U-channel
in its correct position with the u-channel centerline over the threshold centerline as marked in step one.
With a pencil carefully mark each hole position on the threshold centerline. Remove the u-channel and
drill a 3/16” diameter hole, approximately 1” deep, directly on the threshold centerline at the marked
locations.
Note: Do not overtighten screws
QCI0150 REV. 0
WALL PLUGS
U-CHANNEL
#8 X 1-1/2”
TRUSS HEAD SCREWS
Silic
one
WALL PLUGS