Look if your truck bed has some funky bumps in the side. This Dodge Ram is designed specially to take a simple piece of lumber to act as a divider for cargo.
Measure the distance from one side to the other and then take 1/4" off the width so it has some room to take in and out. If it's too tight then it will be difficult to use.
If you want this divider to double as a motorcycle ramp then use a 2x12 or a 2x16. The width isn't that wide so it will still be a steep ramp but works if you're unloading on a hill or dirt pile.