Window awnings for RV's are expensive. That's because they have to be able to withstand over 100 mph wind gusts on a regular basis.
Our '89 Rexhall Airex had awnings on every window. Our new-to-us 1999 34' Bounder has a single long awning over the door and kitchen window, but none on the slide windows or the bedroom windows, and we miss them.
Buying and installing four new RV awnings was going to be well over $1,000.
So.... I remember as a child going camping in our families old camping trailer (Or 'caravan' as we call them in England)
Part of the setup process was my Dad putting up the window awnings. Unlike the roll-out units in a modern rig, these lived in a long thin bag and travelled inside the trailer. They were hung from hooks above each window, unrolled, and the support arms went into a fitting on the side of the trailer. Took a little more time than just pulling out a modern one, but only a minute or two.
A few minutes with a CAD program has made me some measurements, and I'm going to give it a shot. Stick-on/Peel-off Command hooks mean that if I get the first one up and it looks tacky, I take them down and I'm out about $25.
I'll post pics when I get it done.