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1. First, measure the channel width. It must be larger than the overall gate’s frame by at least 32mm
(1-1/4").
2. Verify the channel depth. A maximum difference of ± 25mm (1”) vs the depth indicated on the
approved submittal drawing is acceptable and will not impact the installation or operation.
3. Locate the position of the stop logs or stop plate on one side of the channel. The logs or plate
must be installed perpendicular to the channel wall. Pull a straight line at 90° across the
channel and mark the position on the opposite side. A tolerance of ± 6mm (1/4’’) is acceptable.
(see Figure 3)
If corrective work is needed, contact a qualified professional.
4. Drop a plumb line on one side of the channel at the installation location. Pull the line toward the
wall until the nearest point for the whole channel depth is at 16mm (5/8") from the wall. Mark the
position on the bottom of teh channel. (see Figure 3)
5. Drop the plumb line on the other side of the channel from the position located at point 3. Repeat
the process to locate the bottom position at 16mm (5/8") from the wall.
Figure 3
6. Measure precisely the distance between the 2 marks at the bottom of the channel. That
dimension must be equal or greater to the overall width of the frame. Draw a line on the channel
floor reaching both marks.
7. Measure and mark the center of the line. That will locate the center of the frame.
If corrective work is needed, please have it done by a skilled professional.
