INSTALLATION INSTRUCTIONS Prepare for installation: DUSTED OPTION RE CIRCULATION OPTION a.If you have an outlet to the outside, your cooker hood can be connected as above picture by means of an pipe (with an interior diameter of 150mm). If you don't have an outlet to the outside, you can go with re circulation mode by using carbon filter. 650~750MM | b.Before installation, turn the ยข. The cooker hood should be unit off and unplug it from the placed at a distance of 650~750 outlet.