Atag WG3 Mode D'emploi & Instructions D'installation page 31

assembly
(continued)
fitting the telescopic pipe
NB: During recirculation (WG8), the ventilation slits must not
be covered by the lower telescopic pipe.
Place the upper air duct against the ceiling, slightly to the
left or right of the attachment bracket. Then slide the flanged
rim touching the wall over the protruding lip of the
attachment bracket. Bend the other side wall slightly
outwards and clamp the flanged rim to the other side of the
attachment bracket.
Hook the lower telescopic pipe onto the upper telescopic
pipe and allow the lower part to drop so that it slides into the
edge of the hood.
Put the filters in place and test the extractor hood.
GB 13