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12 In.H 15 In.W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Hat Channel, Outside Height 17 1/2 in, Outside Width 17 1/2 in, Rough Opening Height 18 in, Rough Opening Width 18 in, Louver Maximum Intake 438 cfm, Maximum Exhaust 625 cfm, Flange Width Not Applicable, Free Area 0.5 sq ft, Beginning Point of Water Penetration 1,118 fpm, Maximum Air Velocity 3,000 fpm, Blade Angle 45 Degrees , Material Aluminum, Inside Height 18 in, Inside Width 18 in, Number of Blades 3
Aluminum Sheet 7075, Material Aluminum, Material Grade 7075, Temper T6, Sheet, Overall Length 18 in, Length Tolerance +0.125/-0 in, Overall Width 18 in, Width Tolerance +0.125/-0 in, Thickness 0.16 in, Thickness Tolerance +/-0.006 in, Fabrication Not Applicable, Heat Treatment No Heat Treatment, Heat Treatable Yes, Mechanical Finish Mill, Yield Strength 73,000 psi, Tensile Strength 83,000 psi, Brinell Hardness 150, Rockwell Hardness 87, Includes Material Certificate Yes, Standards ASTM B209
Blower, Wheel Type Forward-Curved, Drive Type Belt Drive, Includes Drive Package No, Assembly Unassembled, Wheel Diameter 11 1/8 in, Minimum Airflow 1,150 cfm, Maximum Airflow 3,440 cfm, Maximum Static Pressure 1 1/2 in wc, Maximum Inlet Air Temperature 150 Degrees F, Shaft Diameter 3/4 in, Bearing Type Ball, Sound Level Not Rated, Wheel Material Steel, Housing Material Steel, Wheel Width 7 5/8 in, Number of Inlets 2, Inlet Diameter 9 1/8 in, Outlet Shape Rectangular, Outlet Height 11 3/8 in