Is used to connect parts and vertical flue with a slope of 45°
D - any diameter of standard sizes larger than the diameter of the insert
| Di, mm | L, mm | H, mm | D, mm |
| 100 | 100 | 341 | 100 |
| 110 | 100 | 356 | 110 |
| 115 | 100 | 363 | 115 |
| 120 | 100 | 370 | 120 |
| 125 | 100 | 377 | 125 |
| 130 | 100 | 384 | 130 |
| 135 | 100 | 391 | 135 |
| 140 | 100 | 398 | 140 |
| 150 | 100 | 412 | 150 |
| 160 | 100 | 426 | 160 |
| 180 | 100 | 455 | 180 |
| 200 | 100 | 483 | 200 |
| 220 | 100 | 511 | 220 |
| 230 | 100 | 552 | 230 |
| 250 | 100 | 554 | 250 |
| 300 | 100 | 624 | 300 |