Reliance RKS230-W The Appalachian Farmhouse Style Kitchen Sink, Other Can be under mounted or caulked directly to the countertop without the use of clips or channels No holes drilled standard; up to 4 holes drilled by MTI at no additional charge No holes drilled standard; up to 4 holes drilled by MTI at no additional charge Durable Lucite high-gloss cross-linked cast acrylic