AIVC's Ventilation Information Paper (VIP) #45.9 summarises current knowledge on trends in building and ductwork airtightness in Japan.

This paper is part of the new VIP series being developed and dealing with trends in building and ductwork airtightness in various countries.

Previously released papers include:

1. Ventilation Information Paper #45.1: Trends in building and ductwork airtightness in Estonia

2. Ventilation Information Paper #45.2: Trends in building and ductwork airtightness in Spain

3. Ventilation Information Paper #45.3: Trends in building and ductwork airtightness in the Czech Republic

4. Ventilation Information Paper #45.4: Trends in building and ductwork airtightness in Belgium

5. Ventilation Information Paper #45.5: Trends in building and ductwork airtightness in Latvia

6. Ventilation Information Paper #45.6: Trends in building and ductwork airtightness in France

7. Ventilation Information Paper #45.7: Trends in building and ductwork airtightness in Greece

8. Ventilation Information Paper #45.8: Trends in building and ductwork airtightness in China

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