SL-220
standard Louver
52mm High Performance series; extruded aluminum construction; frame with channel profile; corner joints mitered and mechanically fastened, with continuous recessed caulking channel each side; intermediate mullions matching frame; gutters; rated for an air performance and water penetration maintained effectiveness rate tested in accordance with AMCA 500-L.
AIRFLOW PERFORMANCE
Free Area: 54% , based on a test sample of 48in (1219.2mm) x 48in (1219.2mm)
Free Area Velocity at Beginning Point of Water Penetration: 685.2 fpm (3.5 m/s)
Air Volume Flow Rate at Beginning Point of Water Penetration: 4,258 cfm (2.0 m3/s)
Pressure Drop at Beginning Point of Water Penetration: 0.04 in. H2O (10 Pa)
Pressure Drop at 1000 fpm Free Area Velocity: 0.15 in. H2O (38 Pa)
Airflow Classification—Class 2 (Intake) and Class 1 (Exhaust)
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