This tension arm, similar to that used on the Thule 8000 and 9200 awnings. 

This arm is manually inserted into the arms of the 5200 awning one it is fully wound out to give further tension to the arms

These sturdy spring arms are patented by Thule and ensure a perfect tensioning of the awning fabric also increasing wind resistance.

This item is optional for the 5200 awning in lengths 3.00m, 3.25m, 3.50m, and 3.75m

4.0m and above have this built into the awning