2″ Deep High Performance Thinline 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 air performance, tested in accordance with AMCA 500-L.
WATER PENETRATION PERFORMANCE Free Area Velocity at Beginning Point of Water Penetration: 535 fpm (2.72 m/s) Air Volume Flow Rate at Beginning Point of Water Penetration — 48in (1220mm) x 48in (1220mm) unit: 4,274.3 cfm (2.02 m3/s) Pressure Drop at Beginning Point of Water Penetration: 0.04 in. H2O (10 Pa)AIRFLOW PERFORMANCE
* Free Area: 51% , based on a test sample of 48in (1220mm) x 48in (1220mm) * Airflow Classification—Class 3