This is the one I used on both trailers. Carefree 902800. Black, white, and brown available.
https://www.amazon.com/Carefree-902800-Automatic-Awning-Support/dp/B00BFTYWI6
Available on eBay also, similar pricing. Also most RV parts places would have or could order.
Our T/Ridge has blocking for the support in the wall construction. The Jayco did not, so it needed a backing plate on the inside of a cabinet to mount the support solidly. Need to check that out on your trailer. Mfg could tell you if your model has blocking or reinforcement for this.