Smeg HB96CSS-3 Installation And Use Manual page 13

7.5
Once the hob is correctly positioned on the supporting base, complete
the mounting by tightening the product using the 4 supplied metric
screws, by screwing them through the 8mm Ø holes made before
installation. Make sure that the holes on the structure are centred with
those on the bottom of the product.
Important: other types of installation are possible if supervised by the
manufacturer.
Important: for fixing this product to the support structure, you are advised
not to use mechanical or electrical screwdrivers and to exert moderate
pressure by hand on the mounting parts.
If this product is installed over an oven, the oven must have a cooling fan.
34
Instructions for the installer
Mounting for type B installations