Ford 2010 F-150 Owner's Manual page 117

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.
117
2010 F-150 (f12)
Owners Guide, 1st Printing
USA (fus)