When assisting a customer on choosing one of ebm-papst products it is important to educate the customer on the levels of protection available, while also identifying the level of protection suitable for the customer’s application. For example, a fan with an IP20 rating would be best suited for an indoor application, where the unit would be kept clean and dry. A fan with an IP68 protection rating is most suitable for an outdoor application due to the competent adaptation to environmental conditions. The first numeric digit in the IP rating corresponds to protection against foreign bodies and accidental contact, while the second digit represents protection against the ingress of water.