Elgen's 2" & 4" Double Wall Turning Vane Rail is used in conjunction with Elgen's 2" & 4" Double Wall
Turning Vane. Elgen's 2" and 4" Double Wall Turning Vane Rail is used for securing and aligning Elgen's 2" & 4" Turning Vanes. This process directs the airflow through rectangular elbows.
4" X 10' Super Rail VR0068