The Dish & Glass Rack Extenders by Vollrath: Traex Rack Max Dishwasher Rack Extender, full-size, 19-3/4W x 19-3/4D x 1-9/16H, (open compartment size 18-1/16W x 18-1/16D), co-polymer plastic, royal blue, NSF, Made in USA ( Vollrath - TRA )