Signature SHD901X Manuel D'utilisation page 62

15) Use two 4*8mm Screws to assemble the Upper Chimney on
the Upper Chimney Bracket.
4*8mm Screws 2pcs
Upper Chimney
Bracket
16) Turn the LED lights on/off, and test whether the functions are
working properly.
COMPONENTS:
4*8mm Screws X 2
EN-23