Method two: 
1)  Drill 4 holes of Ø 6mm at the bottom of the hanging cupboard. 
2)  Put  the  one  way  valve  on  the  cooker hood,  then  install    the  cooker  hood  on  the 
bottom of the cupboard, tighten the hood with enclosed 4 screws (M4*35 ). 
3)  Install the adjusted board on the bottom of the hood in order to keep out the gap 
between hood back and cupboard. 
 
 60CM                                                          90CM 
 
Notice: 
There  are  2  methods  for  ventilation,  including  '  horizontal  ventilation'  and  '  vertical 
ventilation'. Please pay attention to the ventilation method when installation. 
Horizontal ventilation: As pic. 4A shown, please use the cover to seal the outlet on the top, 
then the air can be vented from back. 
Vertical ventilation: As pic 4B shown, please use the cover to seal the outlet on the back, 
then the air can be vented from top. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4