Thule sliding track truck rack, SR model, for carrying ladders, kayaks, canoes, etc.
Fits 2018 Ford F-250 Super Duty pickup with a 6-3/4 foot bed, but can be modified to fit a shorter bed. Holds up to 1,250 pounds, and cost $1,400 new.
Good condition,
Includes cross bars, uprights, base rails, and bolts for anchoring base rails in bed-side stake pockets. Tracks in the base rails allow for sliding the uprights fore or aft, in order to adjust their position and the distance between the cross bars.
Length of the rails is 6-3/4 feet (81"). Holes in rails for the bolts are 73-1/4" apart. Cross bars are a fixed length (70"), but the position of the vertical supports on the bars is continuously adjustable with a sliding track under the bars. Height of bars not adjustable.