I approached the contents of the box with trepidation as the manual was not at all clear. However, it was very straightforward to install especially as it came with a marking aid for the 4 holes to drill to fit it to the wall. Very bright LEDs make it easy to see what you are cooking and the extraction works well - although I had to modify the exhaust parts to match a previous installation. This was NOT a SMEG problem as it was clear before I bought it what extra work was required. Only basic DIY skills required to fit it.