Align the base using a spirit level.
Mark the positions for the dowel holes.
Drill holes and insert dowels.
Put the base on the dowels and hand-tighten the screws.
Align the base once more using a spirit level, and tighten the
screws.
Further see
Chapter 3.3.2 „Connecting the flush valve to the pipe-
Align the base using a spirit level.
4x
Dry construction
Handling
Flush valve universal
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