- Standard lengths are 3/4/5 meters;
- Special lengths can be made upon request.
- Material can be customised.
- The insulated spiral duct uses a double-layer casing with glass wool insulation. Insulation thickness is 15mm.
| Specs | D(min-max) | d(min-max) | t | kg/m |
| 80 | 112.0-112.5 | 80.0-80.5 | 0.5 | 3.12 |
| 100 | 132.0-132.6 | 100.0-100.5 | 0.5 | 3.76 |
| 125 | 157.0-157.6 | 125.0-125.5 | 0.5 | 4.56 |
| 150 | 182.0-182.7 | 150.0-150.6 | 0.5 | 5.35 |
| 160 | 192.0-192.7 | 160.0-160.7 | 0.5 | 5.67 |
| 180 | 212.0-212.8 | 180.0-180.7 | 0.5 | 6.3 |
| 200 | 232.0-232.8 | 200.0-200.7 | 0.5 | 6.94 |
| 225 | 257.0-257.8 | 225.0-225.8 | 0.5 | 7.74 |
| 250 | 282.0-282.8 | 250.0-250.8 | 0.5 | 8.53 |
| 300 | 332.0-332.9 | 300.0-300.9 | 0.5 | 10.12 |
| 315 | 347.0-347.9 | 315.0-315.9 | 0.6 | 12.48 |
| 350 | 380.0-380.9 | 350.0-350.9 | 0.6 | 13.75 |
| 355 | 400.0-400.9 | 355.0-355.9 | 0.6 | 14.25 |
| 400 | 440.0-441.1 | 400.0-400.9 | 0.6 | 15.83 |
| 450 | 480.0-481.1 | 450.0-451.1 | 0.8 | 17.5 |
| 500 | 530.0-531.1 | 500.0-501.1 | 0.8 | 25.24 |
