Round duct filter
RDF
RDF-A
| Size | ΦD(mm) | L(mm) | E(mm) |
| 100 | 100 | 120 | 40 |
| 125 | 125 | 120 | 40 |
| 150 | 150 | 120 | 40 |
| 160 | 160 | 120 | 40 |
| 200 | 200 | 120 | 40 |
| 250 | 250 | 120 | 40 |
| 315 | 315 | 120 | 40 |
| 355 | 355 | 120 | 40 |
| 400 | 400 | 140 | 50 |
| 500 | 500 | 140 | 50 |
| The filter inside can be replaced, The casing is made of Galvanised steel. |
