BS EN 1873 : 2014

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
6 Testing and classification
7 Assessment and verification of constancy of performance - AVCP
8 Designation and marking
Annex A (informative) - Guidelines for safety, application,
        use and maintenance
Annex B (normative) - Alternative test method for the determination
        of light transmission
Annex C (normative) - Test method for air permeability
Annex D (normative) - Determination of thermal transmittance
        of rooflight
Annex E (normative) - Reaction to fire test
Annex ZA (informative) - Clauses of this European Standard
         addressing the provisions of the EU
         Construction Products Regulation
Bibliography

Pertains to rooflights with a rectangular or circular ground plan, with an opening span (width) or diameter not larger than 2,5 m and an opening length not larger than 3,0 m in roof pitches up to 25 degrees.