A variety of companies sell used truck bed toppers, including American Topper and Accessories, Radco Truck Accessory Center and Trucknamerica.com, as of 2015. Ishler's Truck Caps of Pennsylvania sells a limited inventory of used truck caps from its location. In general, the inventory of used truck toppers changes regularly.
Truck bed toppers have three advantages when it comes to truck bed features. Protection from rain, sleet, snow and other bad weather conditions is one reason to consider getting a truck cover. Another reason is that truck toppers offer better security for items left inside the truck bed. The number three reason for choosing a truck cover is to keep items from falling out of the back of the truck while on the road.
Truck toppers, also referred to as shells, come in a variety of shapes, sizes and colors. Toppers are commonly made from sturdy aluminum or fiberglass materials. A standard topper has three or four windows and a solid top. Often the topper has a rear window that opens upwards for easy entry.
The Tonneau truck cover is a flat design that covers the entire bed. Tonneau style covers have no windows and are made of either fiberglass or canvas. One advantage the Tonneau has over a bed shell is that it is easier to remove when necessary.