FORD 2009 F-550 v.1 - Manual (Page 151)

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.
2009 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Driver Controls
151