Meh, MCC structures are indoor only. They wouldn't have lasted either.
Although, that said, I have a client (onion and garlic plant not too far from you, Keith) who put NEMA 1 MCCs in a wash down area. They have survived a lot longer than I thought they would have. I only know about it because they wanted me to quote on replacing just the rusted parts... I opened one of the buckets that has a VFD inside, the VFD has mushrooms growing on it! Dark, wet, warm, onion and garlic dust sucked in by the cooling fan; perfect mushroom farm.
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden