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DIN EN 12097:2006
Ventilation for buildings - Ductwork - Requirements for ductwork components to facilitate maintenance of ductwork systems; German version EN 12097:2006
The project applies to ductwork in buildings for human occupancy. It specifies the dimensions, shape and location requirements for openings, access and inspection covers and access doors for cleaning and service in ductwork. It applies to ductwork which i
Deutsches Institut für Normung [din]