Acoustic Louver



Material
Fixed single piece blade profile. Fixed blades, heads, sills and mullions to be manufactured from 1100 series aluminum alloy with 2.0mm thickness. Interior acoustic material to be 60kg/m3 density rock wool insulation protected by non-woven fire retardant 100% polyester sheeting and perforated bent sheet. Louvre pitch to be spaced at 300mm. Total system depth not to exceed 150 mm. All screws to be non-corrosive SS316.
Dimension & Appearance
Louvre Model
Louver Depth
Pitch
Visual Impact
V300-2
300mm
300mm
Visible
Performance(ASTM-90-09)
Test data shall be from an accredited acoustical laboratory tested in the US (Riverbank Acoustical Laboratories) in accordance with ASTM E-90-09. The minimum acceptable performance through all octave bands is as follows: STC = 17, Free Area = 28%
Frequency(Hz)
63
125
250
500
1000
2000
4000
8000
Transmission Loss
3
7
6
8
11
12
14
13
Noise Reduction
10
12
11
14
18
22
22
24

Testing

Acoustic Louvre: US River Bank Acoustical Laboratories Testing

Tested by Accredited acoustical laboratory in the US (Riverbank Acoustical Laboratories) in accordance with ASTM E-90-09.
 
Bird Mesh Screen




Notes:
W--Width of the mesh
D--Diameter of the wire
Regular Size of Insect/Bird Mesh Screen(mm)
Mesh Width of the mesh Diameter of the wire


Insect Mesh Screen
1.5*1.5 0.25
2*2 0.5
2.5*2.5 0.5



Bird Mesh Screen
5*5 0.8
10*10 1、1.6
11.2*11.2 1.6
12.5*12.5 1.6

Notes:
S--SWD
L--LWD
T--Strand thickness
Bird Mesh Screen(Diamond)
Mesh Width of the mesh Stand thickness

Bird Mesh Screen(Diameter)
10*20 1、1.5
20*40 1、1.5

Project

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