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- 22 Construction technology
- 22-41 Air treatment, ventilation system
- 22-41-13 Air treatment, fitting (air duct)
- 22-41-13-01 Shutter (air duct)
- 22-41-13-02 Fire-protection flap (air duct)
- 22-41-13-03 Smoke protection flap (air duct)
- 22-41-13-04 Damper flap (air duct)
- 22-41-13-05 Supply air valve, exhaust air valve
- 22-41-13-06 Summer bypass flap for ventilator
- 22-41-13-90 Air treatment, fitting (air duct, unspecified)
- 22-41-13-91 Air treatment, fitting (air duct, parts)
- 22-41-13-92 Air treatment, fitting (air duct, accessories)
Classification: 22411300 [ACH260007]
|Preferred name||22-41-13 Air treatment, fitting (air duct)|