. Fireclay Duet Series Reversible Sink W/ Smooth Front Apron,Wht The Farmhaus Fireclay Duet Series reversible 36" fireclay single bowl sink with smooth front apron is finished on all four sides and is available in White, Biscuit, Black and Sapphire Blue. Being eco-friendly and lead free only adds to the allure of Farmhaus Fireclay sink. Whitehaus Collection offers the widest selection of fireclay sinks on the market today.