Curved tube bundle and accessories
| Heating area | Ø Flange | Size (LxH) | Flange holes number | Boiler QB recommended |
| m² | mm | mm | Ø 16 | model |
| 0,5 | 300 | 346×186 | 16 | 200 |
| 0,75 | 300 | 346×186 | 16 | 300 |
| 1 | 300 | 437x 210 | 16 | 500 |
| 1,5 | 380 | 534×291 | 19 | 750 |
| 2 | 380 | 566×248 | 19 | 1000 |
| 3 | 380 | 719×195 | 19 | 1500 |
| 4 | 430 | 688×237 | 22 | 2000 |
| 5 | 430 | 751×698 | 22 | 2500 |
| 6 | 430 | 918×518 | 22 | 3000 |
| 8 | 430 | 1255×528 | 22 | 4000 |
| 10 | 430 | 1577×474 | 22 | 5000 |
