The Rack Warehouse stocks and discounts all System One Utility Body and Service Body Truck Racks. The System One I.T.S. Utility Body and Service Body Contractor Rig Truck Racks are the undisputed leaders among aluminum overhead heavy duty work racks. The System One I.T.S. Service Body and Utility Body Contractor Rig Truck Racks are commonly used for carrying ladders, lumber, pipes, conduit, and other long building materials. Contractor Rigs extend over the roof of your truck and carry up the 1250 lbs. Utility Rigs are positioned over the bed of your Utility Body and Service Body Truck and carry 600 lbs. Both racks are constructed with extruded aluminum components and stainless steel fasteners. The Contractor Rig's rear crossbar may be quickly removed for bed access and for loading tall items. The Utility Rig's rear crossbar and attached leg assembly may be completely removed for convenient access to the rear of your truck bed.