SL-660
6” standard Louver
6″ Deep High Performance Step Blade Heavy Duty 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: 55%, based on test sample of 48in (1220mm)x 48in (1220mm)
Free Area Velocity at Beginning Point of Water Penetration—840 fpm (4.3 m/s)
Air Volume Flow Rate at Beginning Point of Water Penetration: 7,392 cfm (3.5 m3/s)
Pressure Drop at Beginning Point of Water Penetration—0.10 in. wg (25 Pa)
Pressure Drop @ 1000 fpm (5.0 m/s) free area velocity—0.15 in. wg (37 Pa)
Airflow Classification—Class 1
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