Several manufacturers produce light-duty aluminum truck caps, including Unicover and Killam Truck Caps. These caps protect the cargo and truck bed interior as well as fiberglass caps but are lighter and easier to remove and attach. Aluminum truck caps are also typically less expensive, according to Killam Truck Caps.
There are many styles of light-duty aluminum truck caps. The most popular varieties include solid caps, caps with solid windows and models with sliding glass sides. Some have brake lights, ladder racks and aluminum doors on the sides or rear. Other available features include boat racks, front windows and custom height specification.