Fig. D - In the exhaust version (define the rear or upper outet use), detect the optimal length of the fume exhaust pipe (F) and carry out the connection. Set up the electric connection only once the electric power supply has been cut off. For the filtering version, ensure that the upper part of the wall unit has a specific hole for draining the air purified by the carbon filters. - For hood models with additional chemneys, mount them according to the type of wall unit used.