Elkay Crosstown ECTSR15159BG1 Single Bowl Dual Mount Stainless Steel Bar Sink Kit SLIM RIM: Install sink as a top mount or undermount; ultra thin, flat rim virtually eliminates the barrier between sink and counter for a clean look 18-GAUGE STAINLESS STEEL: Highest quality 18-gauge thickness and Type 304 stainless steel for lasting durability, performance and lustrous beauty QUIET: Sound-deadening pad(s) minimizes sound and vibration for a quieter time at the sink TIGHT CORNERS: Fresh, geometric design offers straight sidewalls and a flat bottom for a modern look and more usable space; easy to clean EXTRA DEEP BOWLS: High-capacity bowls offer more room inside for stacking dishes, filling stockpots, and handling large baking sheets and roasters DRAIN OPENING: Sink drain opening measures 3-1/2" CABINET SIZE: Minimum cabinet size for this sink is 18"