ebm-papst is a well-known provider of many various types of cooling fan, including simple tubeaxial designs like 4114N/2H8P. You may also spot this fan in its 4114N/2H8PU form, with an extra ‘U’ suffix. What’s the difference between these two?
In this instance, the ‘U’ indicates an “environmentally friendly” fan, which does not mean extra recyclable. The ‘U’ indicates an IP54 environment-resistant rating not present in the non-U version of the fan. if you need this sealing, you’ll have to order the ‘U’ version; elsewise the two fans are identical in overall performance.