Standard 3 1/2" diameter drain opening There's a reason why a Culinario stainless sink won the Interior Design award. In fact, there are a multitude. Culinario is much more than a sink, it's a workstation that simplifies food prep and up. Its industrial-grade, thick-gauge stainless steel makes it perfect for any tough chef-level task. Insulating Quiet Coat technology minimizes splash-sounds. Interchangeable kitchen tools, like a grater kit, colander and chopping board, combine cooking tasks in one handy spot. It's clear why Culinario is a must-have for professional chefs and aspiring novices alike. Rohl Ruwum3019ws Features: Covered under Rohl's limited Constructed from 16 gauge stainless steel Undermount installation - sink will install under the countertop Single basin design for maximum work space Sound absorbent construction to prevent dish clatter and under cabinet condensation Right drain location Coordinates with products from the Culinario line All mounting hardware required for assembly is included Rohl Ruwum3019ws Specifications: Sink Length: 30" Sink Width: 19" Sink Height: 10" Basin Dimensions: 28" L x 16" W x 9" D Minimum Cabinet Size: 33" Drain Connection Size: 3-1/2"