Carlisle Polypropylene Half Size Stack All Carlisle Blue OptiClean Flatware Rack, 4.5 inch Inside Height -- 1 each.10 inch. x 19.75 inch. size is versatile and compact. Engineered to work in any 19.75 inch. dishwasher. Stackable racks have sturdy single wall construction. Open design for superior water and air circulation. Made of high impact polypropylene. BPA free.