When work comes first, the ACCESS® Toolbox Roll-Up Cover ensures you get the maximum utility from your truck. Engineered to fit behind most 19-21 in. over the rail toolboxes, the 1-1/2 in. increased capacity design offers additional protected storage under the tonneau cover and unobstructed entry to your existing tool box. Integrated vinyl seals and waterproof foam gaskets combine with the front header bar to prevent elements from reaching your cargo while the XT-DIAL™ Tension Adjusters provide direct control to tighten the roll-up tonneau cover with an easy to grip dial. Simple operation, easy installation and superior performance, the durable and tough ACCESS® Toolbox Roll-Up Cover is a working man's tonneau.