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Step 1:
Drill holes in the wall with electrical drill according to the size of bracket (it is packed in the box). Drill
straight into the wall do not shake the dril to avoid damage to the wall. Depth of the holes should be about 30mm
and should be the same in all the holes. After removing dust from the holes, measure the net depth of the holes. If
the depth is more than 33mm or less than 27mm, the expansion pipes can not be properly installed.