The Rocketail Wing Trailer Tail is a verified EPA SmartWay trailer rear fairing technology. Constructed of lightweight, high-impact, gas-infused polymers that are internally cross-braced, the wing-shaped airfoil has a compact footprint with no additional external or internal parts. It extends 14" from the rear of the trailer. The Rocketail Wing is deployed using swing-hinges that lock the wings in their maximum aerodynamic position each time the doors are closed. The system shifts the wings flush with the sides of the trailer each time the doors are opened, allowing the doors to swing a full 270 degrees without being blocked. This unit attaches without guy-wires or struts with two industrial-grade, stainless steel hinges.