Christi, I'd never seen that particular model of awning
before but I have seen some like it.
I was wondering about the attachment to the trailer (via an attached track) because of the climate here in the sPacific North Wet!!! The awning on our 13ft Trillium
attaches to the trailer via a track attachment which helps keep those pesky rain torrents from cascading down the outer sidewall of the trailer. We spend too much time outside (even in the rain) to worry about rain somehow leaching through or onto some of our outdoor nice-ettys, quite often a coffee maker or T/V, blender or sound system may be set up on a potable table set up right against the trailer wall...
Are you located toward the North West part of WA???