SystemAir DVN 355

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1. VKS: Back draft damper
2. SSD: Roof curb
3. ASK: Inflow box SSD
4. VKS: Back draft damper
5. ASS: Flexible connection
6. ASF: Inlet flange
7. FTG: Tilting device
8. TDA: Adapter framework
9. VKM: Back draft damper (motor operated)
10. FDS: Flat roof curb
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