Follow-Up:
Yes. I installed a Carefree Sidewinder II (10"). Its the only one that Winnebago will indorse to be used on the Rialta. I called the Customers service and they say all other Awnings are too heavy to use. They also sent me instruction for installing. I ordered it on line for $275.00 and installed it myself in a little over an hour. Works great and takes to people approximately three minutes to open or close it.