We built our home 16 years ago. About 5 years ago, I wrote and sent a photo of our double Americast American Standard kitchen sink ( white porcelain). The sink had rusted all around the top. You sent me a replacement sink which was fine for a while. The replacement sink on the left now has the finish worn off at the bottom. The entire area keeps turning brown and is very rough not like the smooth porcelin sides. We have other American Standard products in our home and have been very satisfied with them. However, this sink has always been a... read full review »