
Circular ducts
Flat take-offs
A flat take-off connects a circular duct to a flat surface, such as a plenum or a rectangular duct. Straight or at an angle of 15° to 60°.
Key data
- Diameters
- Ø 80 to Ø 1250 mm
- Material
- Galvanised steel (Z275), stainless steel 304 and stainless steel 316.
- Connection
- Male fittings with a U-shaped EPDM gasket that slide into the spiral duct.
- Airtightness
- Pressed pieces: airtightness class D, all other pieces: class C, to EN 1507.
Need a price or lead time?
Ask through the form, or email your list of codes and quantities.
Sizes
All sizes in mm. The article code is shown next to each version: replace Ø with the size you need.
Flat take-offs
ILRs-Ø | ILs-Ø | ILFs-ØILs in all sizes. ILRs from Ø 80 to Ø 400, except Ø 280. ILFs on request.

| Ø |
|---|
| 80 |
| 100 |
| 125 |
| 150 |
| 160 |
| 180 |
| 200 |
| 225 |
| 250 |
| 280 |
| 300 |
| 315 |
| 355 |
| 400 |
| 450 |
| 500 |
| 560 |
| 600 |
| 630 |
| 710 |
| 800 |
| 900 |
| 1000 |
| 1250 |
Angled flat take-offs
ILVs-Ø
| Ø | Angles |
|---|---|
| 80 | 15°, 30°, 45°, 60° |
| 100 | 15°, 30°, 45°, 60° |
| 125 | 15°, 30°, 45°, 60° |
| 150 | 15°, 30°, 45°, 60° |
| 160 | 15°, 30°, 45°, 60° |
| 180 | 15°, 30°, 45°, 60° |
| 200 | 15°, 30°, 45°, 60° |
| 225 | 15°, 30°, 45°, 60° |
| 250 | 15°, 30°, 45°, 60° |
| 280 | 15°, 30°, 45°, 60° |
| 300 | 15°, 30°, 45°, 60° |
| 315 | 15°, 30°, 45°, 60° |
| 355 | 15°, 30°, 45°, 60° |
| 400 | 15°, 30°, 45°, 60° |
| 450 | 15°, 30°, 45°, 60° |
| 500 | 15°, 30°, 45°, 60° |
| 560 | 15°, 30°, 45°, 60° |
| 600 | 15°, 30°, 45°, 60° |
| 630 | 15°, 30°, 45°, 60° |
| 710 | 15°, 30°, 45°, 60° |
| 800 | 15°, 30°, 45°, 60° |
| 900 | 15°, 30°, 45°, 60° |
| 1000 | 15°, 30°, 45°, 60° |
| 1250 | 15°, 30°, 45°, 60° |