Wildcat 5th wheel

What brand air conditioner do you have. Most are either Dometic or Coleman.
Either way, you can probably find a new cover for it here, or if you needs a replacement hard cover (shroud) you will probably find it here. :)
Barney

You can also check on Tweeties.
https://tweetys.com/

I also saw covers on Amazon for Dometic and Coleman for around $22.00

First you have to know the model and manufacturer of the A/C .

Ken