Miele DAD 4840 Operating And Installation Instructions page 43

a Stepped cut-out for flush-fit installation in stone worktops (granite, marble)
b Ensure that materials are sufficiently stable.
c Cut-out off-centre
d The minimum dimension is required if flat ducting is laid under the cabinets or
the DUU 600 recirculation box is used.
Exhaust duct  150 mm.

Risk of heat damage.
The rising heat generated by a gas hob may damage the cooker hood.
The cooker hood must not be operated in combination with a gas hob.
If you are planning to install an oven/cooker in front of the appliance, the
appropriate installation advice and dimensions regarding cool air circulation
must be observed.
Make sure that the installation location is easily accessible. The cooker hood must
also be freely accessible and located such that it can be dismantled in the event of
future service requirements.
Installation
43