Installation Guide
QCI5150 Rev 0 Page 6 Cered 6/6/2016
3 Verify that the U-channels is cut [2] to the appropriate size. This piece of U-channel will be equal
to the opening width.
Next drill three 3/16” diameter holes in the center of U-channel [2] (centerline groove provided for
convenience), two holes approximately 4”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.
4 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].