Whitehaus WHQ330-WH Farmhaus Quatro Alcove 30-Inch Reversible Fireclay Sink with Fluted Apron 3 1/2" center drain Sink is finished on all four sides Drains RNW35, RNW50, or WH200 must be used Matching grid: GR2514 Sink is finished on all four sides 3 1/2" center drain The sinks glaze is practically impervious to threatening bacteria from food preparation.