New Aerodynamic Device Introduced

New Aerodynamic Device Introduced


The USS-120A-4 is Utility’s Newest Advanced Side Skirt

Utility Trailer Manufacturing is proud to introduce the USS-120A-4, a new advanced aerodynamic side skirt design. The USS-120A-4 is U.S. EPA SmartWay® verified to achieve greater than 5% fuel savings and can be used in combination with low rolling resistance tires on Utility trailers to achieve CARB (California Air Resources Board) compliance for California operations.*

“The new USS-120A-4 design is engineered to achieve greater ground clearance to reduce impact damage while maintaining the EPA advanced trailer skirt designation,” said Craig Bennett, Senior Vice President Sales and Marketing at Utility. “Similar to our previous USS-120A, this new generation maintains a unique patented design to provide long term durability.”

The USS-120A-4’s galvanized high tensile steel bracing system allows the side skirt to flex both inward and outward, which can be bent back to their original shape if damaged. The side skirt is also manufactured with a UV protected bi-directional Fiberglass Reinforced Plastic (FRP) construction. To further reduce impact damage the forward edge of the skirt is securely bolted with a “spring” attachment at the support leg assembly. Utility offers an industry leading 5-year warranty on the USS-120A-4, and it is now available as a factory or dealer installation option for new Utility trailers. Retrofitting for existing trailers is available through Utility’s Aftermarket Department.

To find out more about Utility’s new USS-120A-4, contact a local Utility dealer or visit

* This story is not intended to provide legal advice or legal opinion as to the applicability of the California regulation to any particular end use. For correct methods of compliance and details, visit the CARB website

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