Signature SHD901X Manuel D'utilisation page 57

7)Remove the aluminum grease filter and hang the hood on the
corresponding hook of the Wall Bracket.
8)Use a Spirit Level Ruler to measure whether the hood is in a
horizontal level, and use two 4*30mm Screws to lock into the
safety hole position of the hood (not mandatory, according to
user's wishes to choose whether to lock).
COMPONENTS:
4*30mm Screws X 2
4*30mm
Screws 2pcs
EN-18
Spirit Level Ruler