Smeg PGF96 Manual page 11

Instructions for the installer
IMPORTANT: if the appliance is mounted on a unit, make sure that a separating
shelf is installed, as shown in the figure.
If the appliance is instead on an oven installed under the hob, there is no need
to install a separating shelf.
If installed on top of an oven, the latter must be equipped with a cooling fan.
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