Airone BACH EVO Instructions Pour L'utilisation, L'entretien Et L'installation page 16

For the dimensions of the hole, see drawing here below (ATTENTION: one hole hood - domino)
Top mounting of the built-in units:
Flush mounting of the built-in units:
To assemble the hood use the accessories that are supplied and follow the instructions.
A = Built-in units
F
C = Plastic piper
220x90x200
EN - 13
B = KT4
D = Transition
piece
E