Air Conditioner shell cover repair

[pauloh]

The plastic/fiberglass(?) cover on my rooftop air conditioner has a few cracks on one side (inherited from previous owner, see photo). I'm sure this'll get worse without repair and I've seen a few of these covers laying broken alongside the road in my travels...must be a common problem for them to eventually come off of RVs. Any suggestions on how to repair the vent area (those slats are cracked through) and also stop that crack at left before I lose part of mine, or should I replace that whole top part of the shell? If replace, do I contact the factory or is this a generic type of cover?

Have not climbed up there to take a really good look at potential disassembly. Newbie question: is it OK to walk on the roof of a closed TM? I would assume so but any precautions?

There appears to also be a small amount of damage to the AC's metal fins inside the cover, but I'm hoping that's not an issue. Since I bought this unit in early winter I have not been able to fully test the AC yet.

Many thanks,