The fumes and steam are recycled into the kitchen through upper grill H. The models with no suction motor only operate in ducting mode, and must be connected to an external suction device (not supplied). GB 11 Installation GB The minimum distance between the supporting surface for the cooking vessels on the hob and the lowest part of the range hood must be not less than 50cm from electric cookers and 70cm from gas or mixed cookers. If the instructions for installation for the gas hob specify a g