| Item condition | New |
| Manufacture name | SIL-250 |
| Brand | S&P |
| Categories |
Air Ducts
|
| Country of origin* | NL |
| * The actual country of origin may differ depending on the delivery batch. To confirm the specific country of origin, please contact your account manager. | |
| Harmonized System Code | 8414 9000 00 |
| Nominal duct diameter | 250 mm |
| Packing level 1 | 8413893158949 |
| Flexible | No |
| Connection 1 | Insert end |
| Connection 2 | Insert end |
| Material insulating material | Glass wool |
| Insulation thickness | 50 mm |
| Working length | 600 mm |
| Max. medium temperature (continuous) | 60 °C |
| Outer diameter | 355 mm |
| Free passage | 100 % |
| With pre-mounted seal | No |
| Vapour inhibition layer | No |
| Material inner pipe | Sendzimir-galvanised steel |
| Material outer pipe | Sendzimir-galvanised steel |
| Inner diameter | 250 mm |
| With core/cone | No |
| Damping 125 Hz | 2 dB |
| Damping 250 Hz | 6 dB |
| Damping 500 Hz | 13 dB |
| Damping 1000 Hz | 19 dB |
| Damping 2000 Hz | 15 dB |
| Damping 4000 Hz | 8 dB |
| With protection cloth | No |
| Damping 63 Hz | 1 dB |
| Damping 8000 Hz | 6 dB |