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Vibro-Acoustics - Model ALF -Flat Blade Acoustic Louvers
Flat Blade Acoustic Louvers (up to 18” in depth) deliver an economical means of providing attenuation to low velocity air inlet or outlet openings, while minimizing a line of sight through the opening.
Acoustical Performance
Transmission Loss (TL) determined by ASTM E90. Noise Reduction (NR) may be determined as: NR=TL+6. Insertion Loss (IL) may be estimated using: IL=TL+2 for all bands of interest
Aerodynamic Performance
Free Area and Pressure Drop determined by AMCA Standard 500-L for free inlet and outlet under Ideal conditions. System effects due to ducted conditions, low height, or obstructions may increase pressure drop by a factor of 1.5 or higher.
Dimensions
Maximum single piece size: 60" x 120"; larger louver sizes will be multiple pieces. Minimum height: 12". Louver with less than 30" high, will require assistance with product selection to minimize risk of higher pressure drop values.
