Bosch DKE 945L Mode D'emploi Et Notice De Montage page 26

Installation
07. Screw in lower screws (hex screws).
08. Stick protective film over the holes of
the 2 lower mounting bolts in the
protective grid.
09. Connect up the air outlet pipe.
10. Connect the hood to the electricity
supply.
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11. Remove the protective film from the
two flue ducts.
Take care not to damage the
surfaces which are susceptible to
scratches etc.
12. Push both sections of the flue panelling
together (slots in the upper section
must be pointing downwards) and
insert into the opening in the extractor
hood.
Protect the cover panels from
scratches, for example by laying the
template used for marking the wall over
the top edge of the lower section.
13. Slide out the upper section and attach
it to the mounting brackets at the sides
with two screws.
14. Insert the grease filter (refer to
Operating Instructions).