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- DB AL™ - Acoustic Louver
DB AL™ - Acoustic Louver
DECIBEL AL® 300 and DECIBEL AL® 600 are acoustic louver products with a single louver attenuating system. The louvers are made of steel sheets, filled with sound-absorbing material, and one-sided cover by a perforated metal sheet.
The standard sizes of the box are 300 х 1000 х 1000mm. or 600 х 1000 х 1000mm. This makes the attenuators easy to install on facade openings or hang on support metal construction. They can also be stored as standalone screen wall attenuators. DECIBEL AL® 300 and DECIBEL AL® 600 are used mainly in engine rooms, ventilation openings, power generator rooms, boiler rooms, cooling towers, or any other industrial or HVAC systems.
DECIBEL AL® is made of galvanized or powder-coated metal frame and modular parts, including sound-insulating and sound-absorbing front panels. The wings are made of galvanized sheet metal with a finish of perforated sheet metal and filling of sound-absorbing material.
DECIBEL AL® sound-insulating louvers are specially produced for use in cases where a large amount of air must pass through a louvre and where the installation space is limited. This includes enclosures, generators and cooling / heating systems.
Two standard sizes of DECIBEL AL® (300 and 600) soundproofing acoustic louver are produced, each with its own properties in terms of air flow, sound insulation and installation depth. DECIBEL AL® can also be produced in non-standard sizes.
Standard dimensions of DECIBEL AL® |
300 х 1000 х 1000 mm.; (Non standard dimensions available upon request) |
Material: | Galvanized steel; Perforated sheet metal; Sound-absorbing acoustic material; Aluminum |
Finish and colours : | in RAL |
Properties: | Small installation depth; Easy to install; Snow and rain resistant; |
Installation: | By direct fastening with screws or оn an installation frame; The specifics of the installation are determined by the technical features of the project. |
Acoustic Performance of DECIBEL AL® according to EN ISO 140-1:1997
Performance of DECIBEL AL®
Aerodynamic performance of DECIBEL AL®300 | ||||||||
---|---|---|---|---|---|---|---|---|
Static presure drop (N/m2) | 2,8 | 11,3 | 26,2 | 46,3 | 72,3 | 99,2 | 142,6 | 185,1 |
Face velocity (m/s) | 0,5 | 1 | 1,5 | 2 | 2,5 | 3 | 3,5 | 4 |
Acoustic Performance of DECIBEL AL® 300 | ||||||||
---|---|---|---|---|---|---|---|---|
Octave band center frequency (Hz) | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
Transmission Loss (dB) | 7 | 8 | 11 | 13 | 19 | 19 | 15 | 14 |
Aerodynamic performance of DECIBEL AL® 600 | ||||||||
---|---|---|---|---|---|---|---|---|
Static presure drop (N/m2) | 5,4 | 21,6 | 50,9 | 90,7 | 147,9 | 208,2 | 283,6 | 357,5 |
Face velocity (m/s) | 0,5 | 1 | 1,5 | 2 | 2,5 | 3 | 3,5 | 4 |
Acoustic Performance of DECIBEL AL® 600 | ||||||||
---|---|---|---|---|---|---|---|---|
Octave band center frequency (Hz) | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
Transmission Loss (dB) | 8 | 10 | 13 | 25 | 32 | 34 | 29 | 30 |