Burley Flatbed Bicycle Cargo Trailer

From Burley's site:

http://www.burley.com/page_453/flatbed.html

The utilitarian choice for pulling larger loads. Haul up to 100 lb. easily with a balance point designed to reduce torque on the bike and a hitch that is ideally positioned to provide superior tracking and stability. Open front and back makes it easy to haul long loads.