HPD-435 High Performance Drainable
4″High Performance Drainable; 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 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 Penetration: 1,131.7 fpm (5.75 m/s) Air Volume Flow Rate at Beginning Point of Water Penetration — 48in x 48in unit: 8,657.7 cfm (4.09 m3/s) Pressure Drop at Beginning Point of Water Penetration: 0.15 in. H2O (38 Pa)AIRFLOW PERFORMANCE
Free Area : 47.7%, based on a test sample of 48in (1220mm) x 48in (1220mm) Discharge loss coefficient Classification—Class 2
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