Chinook RV

I was up on the roof today to see if the caulking was holding up around the antenna. I inadvertently leaned on the plastic covering of (I think) the air conditioning unit. Not exactly sure what it is but it cracked. I temporarily taped the cracks with Gorilla tape (I love that stuff) but want to replace it.
Does anyone know what it is, or where I can get a replacement. Photos included I hope.

Here is one on Amazon: https://www.amazon.com/gp/product/B00IA ... X0DER&th=1

Thanks Clay. Much appreciated.