Miele DA 420V-6 Operating And Installation Instructions page 41

 Replace the telescopic piece with the
recirculation grilles at the top.
The spacer frame can be installed be‐
tween the tower and the ceiling. This
creates a shadow which gives the illu‐
sion of a gap between the ceiling and
the tower. This is useful if the ceiling is
not level or is uneven. The rangehood is
aligned vertically with the spacers sup‐
plied. Visual irregularities between the
tower and the ceiling are then con‐
cealed by the shadow.
 If you wish to install the rangehood
with the spacer frame, remove the
four inserts from the fixing holes.
Installation
41