ORION FANS IP69K rated fans are available in both ac and dc versions. Designed for applications that must withstand high temperature and high pressure washdown with water and cleaning chemicals, the IP69K rating provides the maximum environmental protection for electronics that are expected to work under the harshest of conditions. The IP69K rating ensures that no damage will occur to electronics during washdown procedures and that no contaminants will enter the fan motor. Devices are rigorously spray tested with 80°C water every 30 seconds with the spray nozzle being 4-6 inches from the fan. The water sprays from 4 angles and is considered a high-pressure stream. Ac fans are available in 180mm-280mm frame sizes, while dc fans are available in 60mm-172mm frame sizes.