This louvre is designed to offer very high free areas and is most suitable in exhaust applications to provide very low pressure drop. Available in flange and channel frame options.
| Height | Width (0.300 - 0.900) | |||||||
| 0.300 | 0.400 | 0.450 | 0.500 | 0.600 | 0.750 | 0.800 | 0.900 | |
| 0.200 | 24.9 | 26.1 | 26.5 | 26.9 | 27.4 | 27.9 | 28.0 | 28.2 |
| 0.300 | 35.8 | 37.6 | 38.2 | 38.7 | 39.4 | 40.1 | 40.3 | 40.6 |
| 0.400 | 39.1 | 41.0 | 41.7 | 42.2 | 43.0 | 43.8 | 44.0 | 44.3 |
| 0.500 | 43.0 | 45.2 | 45.9 | 46.4 | 47.3 | 48.2 | 48.4 | 48.7 |
| 0.600 | 43.8 | 46.0 | 46.7 | 47.3 | 48.2 | 49.0 | 49.3 | 49.6 |
| 0.700 | 46.1 | 48.4 | 49.1 | 49.8 | 50.7 | 51.6 | 51.8 | 52.2 |
| 0.800 | 46.2 | 48.5 | 49.2 | 49.8 | 50.8 | 51.7 | 51.9 | 52.3 |
| 0.900 | 47.8 | 50.2 | 51.0 | 51.6 | 52.6 | 53.5 | 53.8 | 54.1 |
| 1.000 | 47.6 | 50.0 | 50.7 | 51.4 | 52.3 | 53.3 | 53.5 | 53.9 |
| 1.100 | 48.9 | 51.3 | 52.1 | 52.8 | 53.8 | 54.7 | 55.0 | 55.4 |
| 1.200 | 48.5 | 50.9 | 51.8 | 52.4 | 53.4 | 54.3 | 54.6 | 55.0 |
| 1.300 | 49.6 | 52.1 | 52.9 | 53.6 | 54.6 | 55.6 | 55.8 | 56.2 |
| 1.400 | 49.2 | 51.7 | 52.5 | 53.1 | 54.1 | 55.1 | 55.3 | 55.8 |
| 1.500 | 50.1 | 52.6 | 53.5 | 54.1 | 55.1 | 56.1 | 56.4 | 56.8 |
| 1.600 | 49.7 | 52.2 | 53.0 | 53.7 | 54.7 | 55.7 | 55.9 | 56.3 |
| 1.700 | 50.5 | 53.0 | 53.9 | 54.5 | 55.5 | 56.6 | 56.8 | 57.2 |
| 1.800 | 50.1 | 52.6 | 53.4 | 54.1 | 55.1 | 56.1 | 56.4 | 56.8 |
| 1.900 | 50.8 | 53.3 | 54.2 | 54.9 | 55.9 | 56.9 | 57.1 | 57.6 |
| 2.000 | 50.4 | 52.9 | 53.8 | 54.4 | 55.5 | 56.5 | 56.7 | 57.1 |
| 2.500 | 51.4 | 53.9 | 54.8 | 55.5 | 56.5 | 57.5 | 57.8 | 58.2 |