The Carlisle RG9-214 OptiClean 9 Compartment Glass Rack with 2 Extenders makes washing, storing and transporting large items like brandy snifters, grande margarita glasses and carafes easy. The extended height protects delicate stems and bowls from breakage. The glass rack will stack with all other industry standard glass racks for maximum convenience.Made from durable polypropylene plastic, the OptiClean RG9-214 ware washing rack is safe for use in commercial dishwashers and will standup to harsh detergents and heat up to 200 degrees F. Each compartment is designed to allow for maximum water circulation and airflow for proper cleaning and drying.The OptiClean RG9-214 features 9 compartments each measuring 5-13/16" x 5-13/16" and accommodates glasses up to 5-9/16" in diameter. It is certified by the National Sanitation Foundation, made in the USA and recyclable.