BACKRACK Toolbox Bracket; For Use w/Tool Box 21 in.; 17-24 Ford SuperDuty Aluminum Body Model 91021 Bike Rack Accessories and a work load limit

and a work load limit of 300 lbs

The lights are rated SAE J595 Class 1 and CA13 certified

The 1706410 Buyers Underbody Box is one of the best underbody truck boxes for your money

CTech Reading Service Body Drawer Unit 6 Drawers 20

CURT has the an swer

BACKRACK Toolbox Bracket; For Use w/Tool Box 21 in.; 17-24 Ford SuperDuty Aluminum Body Model 91021 Bike Rack Accessories and a work load limitBACKRACK Toolbox Bracket; For Use w Tool Box 21 in.; 17 24 Ford SuperDuty Aluminum Body Model 91021 Replaces Standard Railmount Hardware. Allows Toolbox to be installed flush against BackRack(TM). Eliminates gap between Toolbox and Backrack. Allows Toolbox to be installed without drilling into truck bed. Standard 21 inches. Optional 31 inches available. Includes Two Toolbox Brackets Durable Powdercoat Finish Limited Lifetime Warranty Fitment