| Unit of measurement | TT 125 | ||
| Speed | - | 1 | 2 |
| Connected air duct size | in | 5” | |
| Minimum supply voltage | V | 120 | |
| Maximum supply voltage | V | 120 | |
| Power supply frequency | Hz | 60 | |
| Rated power | W | 24 | 36 |
| Maximum unit current | A | 0.3 | 0.46 |
| Maximum performance @0.2" | CFM | 60 | 120 |
| Sound level | Sones | 1.4 | 2.5 |
| Impeller material | - | Plastic | |