Chrysler 2004 PT Cruiser - Manual (Page 116)

Position 2 (Middle)
Insert the front outboard corners of the shelf panel into
the middle guides and slide forward. Press down on the
back of the shelf panel to lock it into place.
WARNING!
Do not load objects over 100 lbs (45 kg) in position 2
(middle). Failure to follow this warning could cause
the shelf to collapse resulting in personal injury.
Position 3 (Floor)
Insert the front outboard corners of the shelf panel into
the bottom guides and slide forward.
NOTE: To carry items that may soil the carpeting, the
rear shelf panel may be inverted in position 2 or position
3.
116 UNDERSTANDING THE FEATURES OF YOUR VEHICLE