Wanted Plastic Side Window Cover

Hello! We have unfortunately just lost our back window cover and are struggling to find a replacement. Please let me know if you can help!

Your photo does not show. Check Factsheets section , half way down home page, where you will find instructions on show to add photos. 
You also don't say what model, T4 doesn't give enough information,  Trooper, Trident, Topaz???
Whatever model it is, they are no longer available from Auto-Sleeper and breakers may be your only option. Some members have removed them and replaced with vinyl wrapping.

Hello! Thank you for your quick response! Its is a topaz I believe:) 
Yes I thought that would have to be the route to go down thank you!