| Code | Diameter (INCH/MM) | Power (Watt) | Speed (RPM) | Volt (PH) |
| SIS21/SFF12 | 12 | 1300 | 1 | |
| SIS21/SFF16 | 16 | 85 | 1300 | 1 |
| SIS21/SFF18 | 18 | 110 | 1300 | 1 |
| SIS21/SFF20 | 20 | 160 | 1400 | 1 |
| Code | Diameter (INCH/MM) | Power (Watt) | Speed (RPM) | Volt (PH) |
| SIS21/SFF12 | 12 | 1300 | 1 | |
| SIS21/SFF16 | 16 | 85 | 1300 | 1 |
| SIS21/SFF18 | 18 | 110 | 1300 | 1 |
| SIS21/SFF20 | 20 | 160 | 1400 | 1 |