This Intenational Standard specifies the dimensions of the circular and rectangular flanges of general-purpose fans, as well as the fan size designations, it is not applicable to cross-flow fans or to fan appliances used for individual household or similar applications.
DIN EN ISO 13351:2011 Referenced Document
ISO 13349 Fans - Vocabulary and definitions of categories
ISO 3 Preferred numbers; Series of preferred numbers
DIN EN ISO 13351:2011 history
2023DIN EN ISO 13351:2023-12 Fans - Dimensions (ISO/DIS 13351:2023); German and English version prEN ISO 13351:2023 / Note: Date of issue 2023-11-17*Intended as replacement for DIN EN ISO 13351 (2011-11).
2023DIN EN ISO 13351:2023 Fans - Dimensions (ISO/DIS 13351:2023); German and English version prEN ISO 13351:2023
2011DIN EN ISO 13351:2011-11 Fans - Dimensions (ISO 13351:2009); German version EN ISO 13351:2009
2011DIN EN ISO 13351:2011 Fans - Dimensions (ISO 13351:2009); German version EN ISO 13351:2009
2010DIN EN ISO 13351:2010 Industrial fans - Dimensions (ISO 13351:1996); German version EN ISO 13351:2008