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A lightweight, strong retrofit system that can be installed on any FMVSS 223/224 trailer.  Full guarding avaiable by combination of Angelwing, RIG rear retrofit, and SafetySkirt.

Reinforce the rear trailer guard
Reduce aerodynamic drag
Create side impact protection
Provide a target for collision avoidance systems

Uses existing trailer structures and high strength/low weight retrofit components. 
US patents 9,463,759 9,908,493.
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