22.5 cm. Box Tops Education. Earn cash for your school! Did you know? Making, using and disposing of foam plates requires 50% less energy than paper plates of comparable functionality. This product is manufactured without the use of ozone depleting materials. CFC free. BPA free. learn more at: hefty.com/sustainability/facts-on-foams. To contact us visit: Hefty.com, call: 1-800-433-2244. how2recycle.info. Product made in the USA.