The Carlisle RE49C24 OptiClean 49 Compartment Divided Glass Rack Extender gives shorter ware washing racks the height necessary to protect taller items such as cocktail glasses. The extender works with comparably sized Carlisle ware washing racks. Made from durable polypropylene plastic, the RE49C24 cup rack is safe for use in commercial dishwashers and will stand up to the harsh detergents and heat up to 200 degrees F. The open side design promotes through washing and drying. The OptiClean RE49C24 features 49 compartments each measuring 2.38" x 2.38" and accommodates cups up to 2.13" in diameter. It is certified by the National Sanitation Foundation, made in the USA and recyclable.