De Dietrich DRC1775EN Guide D'utilisation page 52

5. Screw a guide into the holes on the appliance side. Insert the sliding rail into the guide and
screw it to the door. Unscrew the guide to screw the last screw of the sliding rail to the door.
Then attach the sliding rail cover to the sliding rail.
Screw the guide back onto the unit by inserting the slide.
Above the freezer compartment, on the left side of the appliance, remove the covers and
screw a side fixing on it. On the right side, unscrew the hinge screws and screw the side
fixing on it.
Finally, attach the side fixing to the door.