Method B See Pic3:
1. Drill 4 holes of Ø 6mm at the bottom of the hanging cupboard.
2. Install the cooker hood on the bottom of the cupboard, tighten the cooker hood with
enclosed 4pcs M4 screws + flat washer +M4 screw nuts.
3. Put the expansion pipe on the one way valve, then lead it to outdoor, or use the
outlet cover to seal the outer outlet and open the inner exhaust valve.
4. Install the adjusted board on the bottom of the hood in order to keep out the gap
between hood back and cupboard.
6