CONTINENTAL EDISON CEHDI9750TCLCD Guide D'utilisation page 47

Installing the hood 47
Install the lower chimney on
appliance again, then screw it
to the wall with 2 screws of
diameter Φ 4 mm and the
corresponding wall plugs (not
supplied).
Fix the upper chimney bracket on the upper chimney
by 2 screws of diameter Φ 8 mm.
Pull the upper chimney upwards to the target height
and mark the holes on the wall.