The Dish & Glass Rack Extenders by Vollrath: Traex Rack Max Dishwasher Rack Extender, full-size, (16) compartments, 19-3/4W x 19-3/4D x 1-9/16H, (compartment size 4-7/16W x 4-7/16D), co-polymer plastic, black, NSF, Made in USA ( Vollrath - TRD )