| Effective L/Dia (mm) | Art No (w/groove) | Air Flow Rate (m3/Hr) | Suitable Pipe Size | Perforated Area (m2) |
| 1000 | 413628.005 | 3-19 | 110mm | 0.238 |
| 1500 | 413638.005 | 4.5-28.5 | 110mm | 0.357 |
| 2000 | 413648.005 | 6-38 | 110mm | 0.476 |
| 1000 | 400648-005 | 3-19 | 114.3mm | 0.238 |
| 1500 | 400658-005 | 4.5-28.5 | 114.3mm | 0.357 |
| 2000 | 400668-005 | 6-38 | 114.3mm | 0.476 |
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