So long as you have the needed 8-1/2 foot length across the back of your toy hauler, if you'd like you can install the Thule HideAway Awning - Direct Mount # TH490018.
You'll need to be able to access the area behind the top rail where the awning will be install to secure it, but if you can do that then there's no reason why the HideAway # TH490018 won't work for you. view full answer...