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Louver Damper Adjustable 30H x 18W
32.5 In.H 20.5 In.W Drnbl Extrd Alu Combo Dmpr Louver Type Combination Frame Type Flanged Outside Height 29 1/2 in Outside Width 17 1/2 in Rough Opening Height 30 in Rough Opening Width 18 in Louver Maximum Intake 1 521 cfm Maximum Exhaust 2 175 cfm Flange Width 1 1/2 in Free Area 1.4 sq ft Beginning Point of Water Penetration 1 118 fpm Maximum Air Velocity 3 000 fpm Blade Angle 45 Degrees Material Aluminum Inside Height 28 1/2 in Inside Width 15 3/4 in Number of Blades 6
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32.5 In.H 20.5 In.W Drnbl Extrd Alu Combo Dmpr Louver Type Combination Frame Type Flanged Outside Height 29 1/2 in Outside Width 17 1/2 in Rough Opening Height 30 in Rough Opening Width 18 in Louver Maximum Intake 1 521 cfm Maximum Exhaust 2 175 cfm Flange Width 1 1/2 in Free Area 1.4 sq ft Beginning Point of Water Penetration 1 118 fpm Maximum Air Velocity 3 000 fpm Blade Angle 45 Degrees Material Aluminum Inside Height 28 1/2 in Inside Width 15 3/4 in Number of Blades 6
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