I replaced mine by cutting them out of stainless sheet.
Use the original as a pattern,trace them onto the new sheet and just cut them out, just like we did in first grade projects.
The stainless sheet is available at many roofing supply houses.
There is polished and unpolished.
I believe that the polished is around $100 for a 48 x 96 sheet, 24 gauge.
Polished looks like your kitchen sink.
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