Elkay eluh1316, gourmet lustertone undermount sink, 16l x 18-1/2w x 7-7/8d highest quality sink formed of #18 1.2mm gauge, type 30418-8 nickel bearing stainless steel. features: undermount finish: exposed surfaces are hand blended to a lustrous satin finish underside: fully protected by heavy duty sound guardundercoating to reduce condemnation and dampen sound complies with: asme a112.19.3-08/csa b45.4-08 optional accessories: bottom grid: lkwobg1316ss cutting boards: cb1613, cb1713, cbr1316, cbs1316 eluh model only drain: lk99 rinsing basket: lkwrb1316ss, lkwerbss utensil caddy for rinsing basket: lkwucss mounting clip: lkuclip8