Ford 2009 F-250 Owner's Manual page 153

Driver Controls
2. Open the latches to release the
panels.
3. Rotate the panels toward the
tailgate.
Repeat Steps 1–3 for the other side of the bed extender.
4. Connect the two panels, then rotate both knobs a quarter-turn
clockwise to secure the panels.
153
2009 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)