The USS-120A is U.S. EPA SmartWay verified as an "Advanced Side Skirt" providing a minimum of 5% fuel savings, and can be used with low rolling resistance tires on dry vans to achieve CARB (California Air Resources Board) compliance for California operations.
Similar to the previous two side skirt designs (USS-120 and USS-160), the new USS-120A is also created with patent pending galvanized high tensile steel braces that allow the side skirt to flex both inward and outward.
The next generation USS-120A side skirt includes an FRP cover over Utility's unique five-hole pattern design on the wingplate. The covered wingplate holes effectively increase the length of the side skirt by up to 2 feet, which increases aerodynamic efficiency. Additionally, the rear edge of the skirt at the support leg assembly is connected by a "slip joint" for reduced impact damage.
The USS-120A is now available as a factory installed option for new Utility trailers. Retrofitting for existing trailers is available through Utility's Aftermarket Department.