[1] ISO 12759-3, Fans — Efficiency classification for fans — Part 3: Fans without drives at maximum operating speed[2] ISO 12759-5, Fans — Efficiency classification for fans — Part 5: Jet fans4)[3] ISO 12759-6, Fans — Efficiency classification for fans — Part 6: Fan efficiency ratio5)[4] ISO 13349:2010, Fans — Vocabulary and definitions of categories[5] ISO 27327-1:2009, Fans — Air curtain units — Part 1: Laboratory methods of testing for aerodynamic performance rating[6] EN 13779, Ventilation for non-residential buildings — Performance requirements for ventilation and room-conditioning systems6)