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26.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 26 3/4 in, Rough Opening Diameter 25 in, Rough Opening Shape Square, Fits Fan Diameter 24 in, For Duct Shape Not Applicable, Free Area 3.2 sq ft, Overall Width 26 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in, Rough Opening Length 25 in
260 Brass Sheet, Material Brass, Material Grade 260, Mechanical Finish Mill, Overall Length 36 in, Overall Width 24 in, Shape Sheet, Thickness 0.102 in, Yield Strength 52,000 psi, Rockwell Hardness B70, Thickness Tolerance +/-0.006 in, Temper H02, Standards ASTM B36, Tensile Strength 61,000 psi, System of Measurement Inch, Brinell Hardness 110, Includes Material Certificate No
260 Brass Sheet, Material Brass, Material Grade 260, Mechanical Finish Mill, Overall Length 4 ft, Overall Width 24 in, Shape Sheet, Thickness 0.102 in, Yield Strength 52,000 psi, Rockwell Hardness B70, Thickness Tolerance +/-0.006 in, Temper H02, Standards ASTM B36, Tensile Strength 61,000 psi, System of Measurement Inch, Brinell Hardness 110, Includes Material Certificate No