NEN EN 12220 : 1998
Current
The latest, up-to-date edition.
VENTILATION FOR BUILDINGS - DUCTWORK - DIMENSIONS OF CIRCULAR FLANGES FOR GENERAL VENTILATION
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions and symbols
4 Dimensions
Annex A (informative) Examples of thickness, breadth
and materials of flanges
Annex B (informative) Examples of different constructions of
flanges
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