Stainless steel sinks

RV sized sinks are sold as bar top sinks in the retail market. Traditionally, they are smaller than a standard kitchen sink. That may not be true with your RV. Measure the size of your original sink and shop with those measurements.

FWIW, I restored both a polymer bath sink and a double bowl stainless in my trailer using rubbing compound and some sweat equity. They are now gleaming like new.