4″ Deep Rain Defense high performance series with Drainable head; 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.
WATER PENETRATION PERFORMANCE Free Area Velocity at Beginning Point of Water Penetra on: 761.2 fpm (3.86m/s) Air Volume Flow Rate at Beginning Point of Water Penetra on — 48in (1220mm) x 48in (1220mm) unit: 6,073 cfm (2.87 m3/s) Pressure Drop at Beginning Point of Water Penetra on: 0.086 in. H2O (22 Pa)AIRFLOW PERFORMANCE
Free Area: 51% , based on a test sample of 48in (1220mm) x 48in (1220mm) Airflow Classifica on—Class 2