Fan noise travels along a shallow branch duct.
Internal absorbing surfaces attenuate sound within the available rectangular airway.
The welded galvanized casing contains sound-absorbing elements aligned with the air path. Its small rectangular connection and one-metre body suit branch noise treatment where the duct remains low in height.
| Nominal Duct Width | 400 mm |
|---|---|
| Nominal Duct Height | 200 mm |
| Casing Length | 1000 mm |
| Casing Material | Galvanized steel sheet |
| Casing Joint | Welded construction |
| Absorber | Internal sound-absorbing media |
| End Connections | Rectangular flanges |
| Overall Flange Size | 440 x 240 mm |
| Fixing Hole Diameter | 9 mm |
| Tùy chỉnh | Available for the intended branch acoustics and installation space. |
Internal absorbing surfaces attenuate sound within the available rectangular airway.
The nominal 400 x 200 mm connection fits the corresponding branch size.
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