Drainable

DD-335 Double Drainable

DESCRIPTION

3″High Performance Double 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: 740 fpm (3.8 m/s) *
• Air Volume Flow Rate at Beginning Point of Water Penetration — 48in x 48in unit: 5,925 cfm (2.8 m3/s)

AIRFLOW PERFORMANCE

• Free Area is 43%, based on test sample of 48in (1220mm) x 48in (1220mm)
• Discharge loss coefficient Classification—Class 2