Oceanic OCEAHC440S9 Guide D'utilisation page 37

Installing the hood 37
Preparation before installation
Carefully remove the carton. Wear gloves to protect your
hands from sharp edges.
Remove the protective film from the product before putting it
into service.
Installation (Mode extraction)
If the wall has an opening to the outside, your
hood may be connected as shown in the diagram
below
using the extraction duct
provided or any suitable
extraction conduit, for example
a flexible aluminum sheath or
constituted another non-
flammable material with an inside
diameter of less than 150mm.