
Rectangular ducts
Rectangular bends
90° bends with an inner radius of 150 mm, with or without turning vanes. We also make special bends to measure, with another angle or a different size at each end.
Key data
- Dimensions
- Made to measure: you choose the cross-section A × B and the length.
- Material
- Galvanised steel (Z275), stainless steel 304 and stainless steel 316.
- Connection
- Frame connection: each piece has a 20 or 30 mm frame at its ends.
- Airtightness
- Airtightness class B, C or D to EN 1507.
Need a price or lead time?
Ask through the form, or email your list of codes and quantities.
Sizes
All dimensions in mm. Every piece is made to measure: send us the dimensions from the drawing, with the code if there is one.
90° bends

| Dimension | Meaning |
|---|---|
| A × B | Cross-section of the duct |
| R | Inner radius: 150 mm |
| E | Straight section on both sides, before the curve |
| k1, k2, … | Frame (connection) |
Bends with turning vanes
With turning vanes in the bend.

| Dimension | Meaning |
|---|---|
| A × B | Cross-section of the duct |
| R | Inner radius: 150 mm |
| E | Straight section on both sides, before the curve |
| k1, k2, … | Frame (connection) |
Special bends
90° bend with a different size at each end, 60° bend, or both combined.

| Dimension | Meaning |
|---|---|
| A × B | Cross-section at one end |
| C × B | Cross-section at the other end |
| E, F | Straight sections before the curve |
| G, K | Outside dimensions of the bend |
| R | Inner radius: 150 mm |
| k1, k2, … | Frame (connection) |