Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 General information
6 Ratings
Annex A (normative) Examples of applying efficiency lines to driven fans
Annex B (informative) Compensation factors
Annex C (informative) The variation of fan performance between installation categories
Annex D (informative) Selection of fans for best efficiency
Annex E (informative) Explanatory note
Bibliography