hi guys, have below question regarding hood installation and hope to get some feedback

my kitchen table top is 61cm width. based on the schematic diagram, I've made a hole in the center and there are roughly 75mm clearance both sides





the question is whether I should make similar clearance of 75mm (eg. add additional board) from the wall when installing the hood so that the hood will be right on top of the hob? Or if I just install the hood on the wall without clearance, will it affect the effectiveness?

This post has been edited by showcase: Aug 5 2015, 01:52 PM