HD Buildings from ClearSpan Fabric Structures are available in gable- and round-style designs and can be mounted as a freestanding structure or affixed to other foundations, such as ponywalls or containers. The frames are made from triple-galvanized structural steel tubing with a 12.5-ounce, high-density polyethylene rip-stop fabric cover. Buildings start at 25 feet wide. New lengths include 160, 180 and 200 feet. 866/643-1010; www.clearspan.com.