Smeg TR93IX Manual page 38

Depending on the type of installation, this
appliance belongs to classes:
A - Class 1
(Free-standing appliance)
B - Class 2 subclass 1
(Built-in appliance)
80
Installation
C - Class 2 subclass 1
(Built-in appliance)
The appliance must be installed by
a qualified technician and
according to the regulations in
force.