Electrum CGH611LX Mode D'emploi page 6

Note: Don't fix the screws too tight so that it will be easy for you to slide
the inner chimney and out chimney to adjust the height.
vi. Hanging the hood on the two hooks (F,G) on Wall Bracket. .Using the supplied
4X30mm screws; screw the hood in to Φ8mm wall plug (D, E) fixed in the
wall. Ensure the hood is level and then fully tighten all the screws.
vii. Mount the exhaust pipe (not supplied) onto the air outlet as shown below.
viii. Place the Outer Chimney over the Inner Chimney and over the hood body. Adjust
the height you want for the Inner Chimney. Mark the positions "H" "I" "J" "K"
as shown. Drill all four holes on the marked points by using Φ8mm drill bit.
Screw Outer Chimney into Φ8mm wall plugs (H,I) fixed in the wall. Screw Inner
Chimney into Φ8mm wall plugs (J,K) fixed in the wall.