Dodge 2006 LX Magnum SRT8 - Manual (Page 124)

Next pull the tonneau cover using the handle and insert
the rear posts by following the guides along each side of
the rear compartment making sure the cover is fully
seated. Waterproof Liner
The optional waterproof liner can be placed over the
lower load floor.
Rear Attachment Points
Waterproof Liner
124 UNDERSTANDING THE FEATURES OF YOUR VEHICLE