2018DIN EN ISO 5801:2018 Fans - Performance testing using standardized airways (ISO 5801:2017); German version EN ISO 5801:2017
2011DIN EN ISO 5801:2011 Industrial fans - Performance testing using standardized airways (ISO 5801:2007, including Cor 1:2008); German version EN ISO 5801:2008
2010DIN EN ISO 5801:2010 Industrial fans - Performance testing using standardized airways (ISO 5801:2007, including Cor 1:2008); German version EN ISO 5801:2008
1985DIN 24163-2:1985 Fans; performance testing, standardized test airways