Miele DA 420V-6 Operating And Installation Instructions page 43

 Replace the telescopic piece with the
recirculation grilles at the top.
The spacer frame can be installed
between the tower and the ceiling. This
creates a shadow which gives the
illusion of a gap between the ceiling
and the tower. This is useful if the
ceiling is not level or is uneven. The
cooker hood is aligned vertically with
the spacers supplied. Visual
irregularities between the tower and the
ceiling are then concealed by the
shadow.
 If you wish to install the cooker hood
with the spacer frame, remove the
four inserts from the fixing holes.
Installation
43