Series 2000 Three Pass
Coefficient of Discharge: 0.343
The Robertson Three Pass Louvre is a fixed blade
louvre consisting of a two pass box louvre with
continuous weather louvres on the external face.
Design Features
Designed to provide enhanced weatherproof
characteristics in high exposure areas with severe
rainfall events, while offering optimal structural
and pressure-loss characteristics. The Three
Pass Louvre will fit into openings in brickwork,
masonry and vertical cladding. The unit can be
factory assembled or can be broken down for site
assembly.
Standard Louvre Heights (mm)
| No. of Blades |
Hieght H (mm) |
Width (mm) |
| 500 |
1000 |
1250 |
1500 |
| Measured Free Area (m2) |
| *9 |
957 |
0.18 |
0.41 |
0.52 |
0.63 |
| 10 |
1060 |
0.20 |
0.45 |
0.58 |
0.71 |
| 11 |
1163 |
0.22 |
0.51 |
0.65 |
0.79 |
| 12 |
1266 |
0.24 |
0.56 |
0.71 |
0.97 |
| 13 |
1369 |
0.27 |
0.61 |
0.78 |
0.95 |
| 14 |
1472 |
0.29 |
0.66 |
0.84 |
1.03 |
| 15 |
1575 |
0.31 |
0.71 |
0.91 |
1.11 |
| 16 |
1678 |
0.33 |
0.76 |
0.98 |
1.20 |
| 17 |
1781 |
0.36 |
0.81 |
1.04 |
1.26 |
| 18 |
1884 |
0.38 |
0.86 |
1.10 |
1.34 |
| 19 |
1987 |
0.40 |
0.91 |
1.17 |
1.43 |
* Denotes minimum dimensional limitation.
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