Blanco 518168 Quatrus Bar Bowl 18-Gauge, 304 Series Stainless Steel Required cabinet size is 21 inch Under mount clips are provided, drain is not included Sound-deadening insulation Limited lifetime warranty No detail has been left unturned in our newest design, BLANCO QUATRUS Bowl Depth: 8-Inch, Required outside cabinet: 21-Inch Cutout Size: Template provided with approximate 1/8-Inch reveal, 304 Series Stainless Steel 18 Gauge Stainless Steel 18/10 Chrome-Nickel Content, Satin Finish