Extang 40475 Full Tilt Snapless Toolbox Hinged Tonneau Cover - fits F150 (5 1/2 ft bed) 15-18 Incredible Versatility; Roll Up, Lift Up, or Lift Off! Bridges Toolbox-To-Tonneau For Perfect Fit L-Channel design also provides for rain drainage Fits Most Standard 20 in. Tool Boxes Designed To Be Removed By One Person