Carry ladders, lumber, and more with this aerodynamic truck bed ladder rack. Sliding load stops make securing loads fast and easy. Rustproof aluminum construction. Simple, clamp-on installation. Fits most pickup trucks.Center the bars over your truck bed, then secure them in place with hand knobs. Sliding Load Stops The load stops are easily adjustable along the crossbars. Just loosen the knobs under the crossbar, slide the load stops to the desired position, and tighten them.