| Model | GF-DC1 | GF-DC2 | GF-DC3 |
| Material | ABS engineer plastic, single layer sunshine board | ABS engineer plastic, single layer sunshine board | ABS engineer plastic, single layer sunshine board |
| Opening mode | Negative pressure | Negative pressure | Negative pressure |
| Window size LxW(mm) | 665x685x125 | 945x965x125 | 1505x1600x125 |
| Installation size LxW(mm) | 565x585 | 845x865 | 1405x1500 |