Integral Drainboards Integral drainboards add functionality to your stainless countertop. Choose from various practical options. Raised Rib Drainboard shown on Antique Matte Finish Depressed Rib Drainboard #4 Brushed Raised Rib Coved Corner Drainboard shown on Antique Matte Finish Depressed Rib Drainboard #4 Brushed “V” Groove Depression #4 Brushed “V” Groove Depression Antique Matte finish Depressed Rib Drainboard #4 Brushed Depressed Rib Drainboard Antique Matte “V” Groove Depression #4 Brushed