Outside Air Louvre OAL-L
Model OAL-LOAL-L
The Polyaire Large Section Outside Air Louvre Model OAL-L is normally used for large sizes and large air quantities.
Construction is from all extruded aluminium with a standard flange of 32mm.
A Bird screen of 12mm x 12mm square mesh is fitted to the rear as an option.
Standard finish is natural anodised while other finishes including powder coat are available to suit the interior and architectural design requirements.
Model OAL-L Outside Air Louvres are manufactured to order in a wide range of sizes.
Selection Data - OAL-L
| Nominal Height (mm) |
203 |
305 | 380 | 460 | 535 | 610 | 685 | 760 | 840 | 915 | 1070 | 1525 |
| Free Area % | 40.0 | 46.8 | 50.0 | 52.0 | 53.4 | 55.0 | 55.7 | 56.0 | 57.0 | 57.0 | 58.0 | 62.5 |
Selection Data for OAL (S & L) Outside Air Louvres
| Jet Velocity m/s | |||||||||||||
| Nominal Face | 1.0 | 2.50 | 2.17 | 2.03 | 1.96 | 1.91 | 1.85 | 1.83 | 1.81 | 1.79 | 1.78 | 1.76 | 1.64 |
| 1.5 | 3.76 | 3.25 | 3.05 | 2.98 | 2.86 | 2.77 | 2.74 | 2.73 | 2.69 | 2.68 | 2.64 | 2.44 | |
| Velocity m/s | 2.0 | 5.03 | 4.34 | 4.06 | 3.91 | 3.81 | 3.71 | 3.66 | 3.63 | 3.58 | 3.56 | 3.51 | 3.25 |
| 2.5 | 6.30 | 5.44 | 5.08 | 4.88 | 4.78 | 4.62 | 4.57 | 4.55 | 4.47 | 4.45 | 4.39 | 4.06 | |
| 3.0 | 7.62 | 6.50 | 6.10 | 5.88 | 6.22 | 6.05 | 5.49 | 5.45 | 5.39 | 5.36 | 5.28 | 4.88 | |
| 3.5 | - | - | 7.11 | 6.81 | 6.66 | 6.46 | 6.40 | 5.85 | 6.30 | 6.25 | 6.15 | 5.69 | |
| 4.0 | - | - | - | - | - | - | 7.32 | 7.26 | 7.21 | 7.16 | 7.01 | 6.50 | |