Outside Air Louvre OAL-L

Model OAL-LOAL-L

244403 Grilles OutsideAirLouvres 640x640 OutsideAirLouvreOAL L CDia
244403 Grilles OutsideAirLouvres 640x640 OutsideAirLouvreOAL L CDia

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 Louvre are manufactured to order in a wide range of sizes.

OutsideAirLouvreOAL L CDia

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