Rubbermaid 1182MAWHT Drain Board, 18 in L, 14.7 in W, 1.3 in H, Plastic, White
EveryMarket
Dish Drain Board
Amazon.com - YOHOM Draining Board Tray for Under-Mount Sink Drain Board Plastic Dish Drainer Board for Kitchen Counter Utility Draining Board 13.78" L x 13.19" W x 1.1" H