Acoustic Louvre Catalogue

Acoustic Louvres A complete range of certified, high performance acoustic louvres to solve a wide range of environmental noise pollution problems

IAC Acoustics Making the World a Quieter Place Founded on an unrivalled history of engineering with some of the most pioneering discoveries in the industry, the IAC Acoustics brand is synonymous with technological innovation.

From controlling noise at a power station to tuning the sound in a TV or radio studio, IAC Acoustics has had a positive impact on society and helped to shape what can be achieved to make speech more intelligible, music more enjoyable, reduce the impact of industrial noise and protect people’s sense of hearing.

The continual success of our products and services over the decades has brought the brand a reputation for quality and reliability among customers, whether they are multinational corporations or independent family businesses. This is supported by the expertise and passion of our workforce, the people behind the products, including designers, engineers and industry specialists.

To face the ever increasing noise reduction demands of the future, we will strive to further enhance our ability to reduce excessive noise. We aim to focus on developing tomorrow’s solution today, innovating faster and delivering solutions that meet the requirements of the next generation. In doing so, we will stay true to our key values and founding philosophy to make the world a quieter place.

2

Page 4

Acoustic Louvres Overview

6

Acoustic Louvre Range

8

Product Features

10

Acoustic Louvre Installation

12

Acoustic Louvre Specifications

14 - Noishield™

Acoustic Louvre Model R

15 - Noishield™

Acoustic Louvre Model 2R

16 - Noishield™

Acoustic Louvre Model LP

17 - Noishield™

Acoustic Louvre Model 2LP

18 - Slimshield™

Acoustic Louvre SL-100

19 - Slimshield™

Acoustic Louvre SL-150

20 - Slimshield™

Acoustic Louvre SL-300

21 - Slimshield™

Acoustic Louvre SL-600

22 - Slimshield™

Acoustic Louvre SL-V300L

23 - Slimshield™

Acoustic Louvre SL-V300S

24

Acoustic Louvred Doors

26

Acoustic Louvres in Harsh Environments

27

Office Contacts

3

Acoustic Louvres Overview IAC Acoustics is a leading global manufacturer of rugged, high performance acoustic louvres and has completed thousands of installations worldwide. Applications include: • • • • •

Fresh air intakes for ventilation systems Mechanical equipment screens and penthouses Noise barriers Process air intakes Cooling tower inlets / exhausts and screens

IAC can provide acoustic louvre solutions to combat environmental noise problems in mixed commercial / residential areas, carrying out all relevant noise surveys and acoustic analysis.

IAC Acoustics’ curved (Noishield™) or linear (Slimshield™) blade louvre styles can be used to match the overall scale and aesthetics of a new building.

4

Form & Function Together Our acoustic louvred screens result in a high performance solution to unwanted levels of noise, without the need for additional architectural cladding.

5

Acoustic Louvre Range Noishield™ - Aerofoil blade Model R & Model LP: 305mm deep Model 2R & Model 2LP: 610mm deep

Slimshield™ - Linear Blade SL-100: 100mm deep SL-150: 152mm deep SL-300: 300mm deep SL-600 (double banked): 600mm deep SL-V300L: 300mm deep SL-V300S: 300mm deep

Noishield™ Louvres - Sound Transmission Loss (dB) Octave Band Louvre Centre Depth Frequency, Hz (mm)

63

125

250

500

1k

2k

4k

8k

Model R

305

5

7

11

12

13

14

12

9

Model 2R

610

6

12

15

21

24

27

25

20

Model LP

305

4

5

8

9

12

9

7

6

Model 2LP

610

5

8

12

16

22

18

15

14

Slimshield™ Louvres - Sound Transmission Loss (dB)

6

Octave Band Louvre Centre Depth Frequency, Hz (mm)

63

125

250

500

1k

2k

4k

8k

SL-100

100

5

4

5

6

9

13

14

13

SL-150

150

6

6

8

10

14

18

16

15

SL-300

300

6

7

10

12

18

18

14

13

SL-600

600

7

9

12

24

31

33

29

30

SL-V300L

300

-

5

10

12

17

22

21

21

SL-V300S

300

-

7

13

13

18

21

20

21

Integrated or Standalone Our acoustic louvres can be used as standalone screens around mechanical plant, or integrated into walls and building faรงades.

7

Product Features Our acoustic louvres are multi-purpose, permitting air to flow, whilst shielding the environment from unwanted noise.

Both IAC Acoustics Noishield™ and Slimshield™ louvres are available in an array of standard modular sizes, meaning that a wide range of performance requirements can be met. By using our range of acoustic louvres, it overcomes architectural consistency issues, especially where space is limited.

Where access is required, both Noishield™ and Slimshield™ acoustic louvres can be supplied as doorsets, either for inclusion in louvred screens, or as standalone units.

Noishield™ Special Features

Finishes Available

• Suitable for use behind

• Galvanised mild steel

architectural louvres

• Aluminium

(100mm air space is

• Stainless steel

required between faces)

• Polyester Power Coated

• Bold, curved blade appearance • A highly economical

(PPC) • Vinyl coated steel • Syntha Pulvin

acoustic louvre system Other non-standard finishes Slimshield™ Special Features • Linear appearance • Superior high frequency performance

8

are available upon request.

NOISHIELD™

SLIMSHIELD™

Rugged all-steel galvanised construction. Stainless steel, aluminium and other materials are also available Inert, vermin-proof, weather-rated non combustible acoustic fill FOR NOISHIELD™ Aerofoil shaped splitter blade for maximum noise reduction with minimum pressure drop FOR SLIMSHIELD™ Linear blade appearance for superior high frequency performance Perforated splitter underside for maximum sound absorption Weather stop inhibits rain/snow entry FOR NOISHIELD™ 305mm for the single banked system or 610mm deep for the double banked system FOR SLIMSHIELD™ 100, 152, 300mm deep single banked systems and 600mm deep for the double banked system Available in a variety of durable, attractive finishes, e.g. vinyl coated steel, polyester powder paint, mill finish aluminium, anodised aluminium, Syntha Pulvin, galvanised and stainless steel Modular sizes enable assembly of rectilinear louvre ‘walls’ of almost any size Louvre blade orientation blocks horizontal line of site, enhancing both aesthetics and acoustic performance Bird guards are available in galvanised or stainless steel, insect screens can also be supplied

9

Acoustic Louvre Installation Typical details are shown below and certified dimension drawings are provided with each acoustic louvre. IAC Acoustics will supply all supporting steelwork if necessary.

For large louvre banks, IAC Acoustics will provide installation drawings and a full installation service if Exterior required.

Flush Exterior ConcreteFlush Inserts Louvre

Louvre

Flush Flush Exterior Exterior Exterior Flanged Exterior Flush Exterior LouvreLouvre

Exterior

CaulkCaulk

Flanged Flanged Exterior Exterior Exterior Exterior Caulk

Caulk CaulkCaulk

Exterior LouvreExterior LouvreLouvre

Caulk

Caulk

CaulkCaulk

LouvreLouvre Exterior

Caulk Caulk Masonry Masonry Strap Strap Caulk

Masonry Mullion Strap

Flush Flush Interior Interior Exterior Exterior

CaulkCaulk Caulk Caulk

Bolted Bolted Connections Connections Grout with Exterior Exterior Mortar

Caulk Mullion Mullion

Bolted Connections LouvreLouvre Mullion

10

Exterior Exterior Louvre

Exterior Exterior Louvre

Exterior

Exterior

Masonry Strap

Caulk Caulk

Caulk

Exterior

Louvre

Grout with Mortar

Caulk

Mortar

Exterior

Masonry Anchors Caulk Caulk

Caulk

BoltedLouvre Connections

Bolted Connectio

Louvre Mullion Exterior

Exterior Louvre

GroutLouvre Grout withLouvre with Louvre MortarMortar

Exterior LouvreExterior Louvre CaulkCaulk

Exterior

Flush Grout Interior with

Grout with Masonry Masonry Anchors Anchors Exterior Exterior Mortar Exterior Exterior

Flanged Exterior Exterior

Exterior Louvre

Louvre

Caulk

Masonry Anchors Louvre

Masonry Strap

Bolted Connections FlushAnchors Interior Masonry

Flush InteriorExterior Caulk Flanged LouvreLouvre

Flush Interior LouvreLouvre

Caulk

Masonry Flanged Anchors Exterior Concrete Inserts LouvreLouvre Caulk

Exterior LouvreExterior Louvre

Caulk

Concrete Inserts

Concrete Inserts Louvre

Exterior Louvre

Louvre

Concrete Concrete Inserts Inserts Exterior Exterior

Caulk

Flush Exterior

Exterior

Caulk

Engineered for Performance Despite primarily being engineered as a high performance solution to attenuating unwanted noise, our acoustic louvres are a modular design, resulting in screens that are scalable to suit individual projects.

11

Acoustic Louvre Specifications Page

12

14

Noishield™ Acoustic Louvre Type R

15

Noishield™ Acoustic Louvre Type 2R

16

Noishield™ Acoustic Louvre Type LP

17

Noishield™ Acoustic Louvre Type 2LP

18

Slimshield™ Acoustic Louvre SL-100

19

Slimshield™ Acoustic Louvre SL-150

20

Slimshield™ Acoustic Louvre SL-300

21

Slimshield™ Acoustic Louvre SL-600

22

Slimshield™ Acoustic Louvre SL-V300L

23

Slimshield™ Acoustic Louvre SL-V300S

13

www.iac-noisecontrol.com

Model R

Module Width 300 - 1800mm

305

150

“H” ±2

Weight 40kg/m2

305

190

76

Noishield™ Acoustic Louvres

Ø12 Holes Typ. Both Sides

Standard Module Height 305 - 3660mm (in 305mm increments) Intermediate heights are available

100

Birdscreen Optional

=

200

“W” ±1

=

305

250

Acoustic Performance

200

63

Transmission Loss (dB)

125 250 500

5

100

7

11

12

1k

2k

4k

8k

13

14

12

9

0

1

2

3

4

12 10 8 6

2

For noise reduction, add 6dB to the above values

0

14

4

Rw14dB / Dnew21dB

50Acoustic Rating

16

0

5

63 125 250 500 1k 2k

Aerodynamic Performance Pressure

10

2 150Drop (N/m )

Face 100Velocity (m/s) Nominal Free Area

Static Pressure Drop (N/m2)

0 Cd

30

40

50

43%*

70

80

90 100

1

2

3

Single and double doors are available in the R louvre range See page 24 for further details

• 150 100

0

150 15 100 10

Face Velocity (m/s)

Acoustic Louvred Doors •

25 200 20

0 0

0.239

250 200

30 250

5 50

* Average over louvre depth

50

14

60

0.98 1.39 1.71 1.95 2.18 2.39 2.60 2.75 2.93 3.10

50 0

20

2 Static Pressure Drop (N/m ) Transmission Loss (dB)

250

200Static

8k

Frequency (Hz)

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Face Velocity (m/s)

4k

0

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

14 250 12 10 200 8 150 6 100 4 2 50

0

1

2

3

4

5

Face Velocity (m/s)

0 0

www.iac-noisecontrol.com 63 125 250 500 1k 2k 4k 8k 0

1

2 Frequency (Hz) 3 Face Velocity (m/s)

Errors and Omissions Excepted (E&OE).

Octave Band Centre 150Frequency (Hz)

Transmission Loss (dB)

Static Pressure Drop (N/m2)

Max. Width 1220

Noishield™ Acoustic Louvres

Model 2R

100

1

2

3

4

6

“W” ±1

2

Max. Width 1220

0

5

Louvre Supplied in 2 Halves Bolted Together on Site 200 305

Birdscreen Optional

63 125 250 500 1k 2k

Acoustic Performance

200

Octave Band Centre

63

100

Transmission Loss (dB)

6

125 250 500 12

15

1k

21

24

2k 27

4k 25

8k 20

Rw24dB / Dnew31dB

50 Acoustic Rating 0

Static Pressure Drop Loss (N/m(dB) ) Transmission

250

150 Frequency (Hz)

1

2

30 250 25 200 20 150 15 100 10

0 0

3

Aerodynamic Performance

Static Pressure Drop (N/m ) Transmission Loss (dB)

250

2

Static Pressure Drop (N/m2)

Face Velocity (m/s)

200

Static Pressure 150 Drop (N/m2)

10

100 Face

Velocity (m/s)

1

40

50

60

43%*

Free Area Cd 0

30

70

80

90 100

0.70 1.07 1.21 1.39 1.55 1.68 1.79 1.89 2.01 2.13

50 Nominal 0

20

2

* Average over louvre depth

3

4

5

8k

5 50

For noise reduction, add 6dB to the above values 0

4k

Frequency (Hz)

2

Static Pressure Drop (N/m2)

Face Velocity (m/s)

0

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

14 250 12 10 200 8 150 6 100 4 2 50 0

0.17

0

Face Velocity (m/s)

63 125 250 500 1k 2k

0

1

4k

8k

2 Frequency (Hz) 3

Pressure Drop = ṁ/Cd ṁ = mass flow Cd = Discharge Coefficient

200 150 100 50 0

0

1

2

3

4 Face Velocity (m/s)

2

250

Static Pressure Drop (N/m ) Transmission Loss (dB)

Face Velocity (m/s)

25 250 20 200 15 150 10 100

Errors and Omissions Excepted (E&OE).

0

Ø12 Holes Typ. Both Sides

8

4

50

76

14

100

150

305

150

16

Standard Module Height 12 305 - 3660mm (in 305mm increments) Intermediate heights are available 10

200

0

305

Module Width 300 - 1800mm

Transmission Loss (dB)

Weight 80kg/m2

250

“H” ±2

Static Pressure Drop (N/m2)

190

610

Static Pressure Drop (N/m2)

ouvre Supplied in Halves Bolted ogether n Site

www.iac-noisecontrol.com

5 50 0 0

0

63 125 250www.iac-noisecontrol.com 500 1k 2k 4k 8k 1 2 3 Frequency 4 5 (Hz) Face Velocity (m/s)

15

Transmission Loss (dB)

www.iac-noisecontrol.com 200

150 Noishield™ Acoustic Louvres 100

14 12

Model LP

10 8 6

102

4

50

2 2

3

4

0

5

250

Module Width 300 - 1800mm

30 250

100 50

“W” ±1

1

2

100 10

0 0

3

Acoustic Performance

200

Octave Band Centre 150Frequency (Hz) Transmission Loss (dB)

63

125 250 500

4

100

5

8

9

1k

2k

4k

8k

12

9

7

6

Rw11dB / Dnew18dB

50Acoustic Rating

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Face Velocity (m/s)

250

0

1

2

3

4

200

=

305

0

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

14 250 12 10 200 8 150 6 100 4 2 50

For noise reduction, add 6dB to the above values

0

=

5 50

Max. Width 1220

0

Birdscreen Optional

150 15

151

150

8k

Ø12 Holes Typ. Both Sides

Standard Module Height 25 356 - 3560mm (in 356mm increments) 200 Intermediate heights are available 20

200

0

4k

Frequency (Hz)

356

Weight 35kg/m2

2 Static Pressure Drop (N/m )±2 “H”(dB) Transmission Loss

Static Pressure Drop (N/m2)

Face Velocity (m/s)

63 125 250 500 1k 2k

356

1

356

0

150

0

16

216

Static Pressure Drop (N/m2)

250

0

5

0

Face Velocity (m/s)

63 125 250 500 1k 2k

0

1

4k

8k

2 Frequency (Hz) 3

200Static

Pressure

150Drop (N/m2)

10

20

30

40

50

60

70

80

90 100

Face

100Velocity (m/s) 1.23 1.73 2.11 2.46 2.74 3.00 3.24 3.46 3.65 3.86 50Nominal

Free Area

0Cd 0

1

52%* 2

* Average over louvre depth

3

4

25 250 20 200 15 150 10 100 5 50 0 0

0.3

Face Velocity (m/s)

0

63 125 250 500 1k 2k 4k 8k 1 2 3 Frequency 4 5 (Hz)

Acoustic Louvred Doors

16

•

Single and double doors are available in the LP louvre range

•

See page 24 for further details

Static Pressure Drop (N/m2)

Face Velocity (m/s)

250 200 150 100 50 0

www.iac-noisecontrol.com 0

1

2

3

4 Face Velocity (m/s)

Errors and Omissions Excepted (E&OE).

Aerodynamic Performance

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Face Velocity (m/s)

250

Noishield™ Acoustic Louvres 150 100

25 200 20

100 10 5 50

2

0 0

3

356

Static Pressure Drop (N/m2) Transmission Loss (dB)

Module Width 300 - 1800mm “H” ±2

63 125 250 500 1k 2k

1

2

3

4k

8k

4

14 250 12

Standard Module Height 356 - 3560mm (in 356mm increments) 10 Intermediate heights are available200 Ø12 Holes

200 150 100 50

“W” ±1

0

1

2

3

4

8 150 6

5

200

100 4

0

Face Velocity (m/s)

Louvre Supplied in 2 Halves Bolted Together on Site

Typ. Both Sides

305

2 Birdscreen 50 Optional 0

Max. Width 1220

5

Frequency (Hz) Face Velocity (m/s)

151

Static Pressure Drop (N/m2)

Weight 70kg/m2

250

0

356

1

610 150

0

Face Velocity (m/s)

0

Model 2LP

150 15

216

0

30 250

102

2 Static Pressure Drop (N/m ) Transmission Loss (dB)

Static Pressure Drop (N/m2)

200

50

63 125 250 500 1k 2k

0

1

4k

8k

2 Frequency (Hz) 3

250

2

Acoustic Performance

200

Octave Band Centre 150 Frequency (Hz) 100

63

Transmission Loss (dB)

5

125 250 500 8

12

16

1k

2k

4k

8k

22

18

15

14

Rw19dB / Dnew25dB

50 Acoustic Rating 0

Static Pressure Drop (N/m ) Transmission Loss (dB)

Face Velocity (m/s)

For noise reduction, add 6dB to the above values 0

1

2

3

25 250 20 200 15 150 10 100 5 50 0 0

4 Face Velocity (m/s)

0

63 125 250 500 1k 2k 4k 8k (Hz) 1 2 3 Frequency 4 5

Static Pressure Drop (N/m2)

10

20

30

40

50

60

70

80

90 100

Face 1.07 1.41 1.73 1.98 2.21 2.46 2.62 2.77 2.99 3.12 Velocity (m/s) Nominal Free Area

52%*

Cd

* Average over louvre depth

0.242

250 200 150 100 50 0

0

1

2

3

4 Face Velocity (m/s)

Pressure Drop = ṁ/Cd ṁ = mass flow Cd = Discharge Coefficient

www.iac-noisecontrol.com

Errors and Omissions Excepted (E&OE).

Aerodynamic Performance

Static Pressure Drop (N/m )

Face Velocity (m/s)

2

Static Pressure Drop (N/m2)

ouvre Supplied in Halves Bolted ogether n Site

250

www.iac-noisecontrol.com

17

www.iac-noisecontrol.com

Slimshield™ Acoustic Louvres

SL-100

100 25

Weight 20kg/m2

Module Width 300 - 1800mm “H” ±2

Fixing Holes Optional

203 Typ. Pitch

100

86 Airway

Standard Module Height 400mm minimum, (increasing increments of 203mm) Intermediate heights are available

Fixing Holes Optional

Birdscreen Optional

Non-Standard Base Section

117 Blade

Varies

Birdscreen Optional

“W” ±1

Acoustic Performance

200

100

63

Transmission Loss (dB)

125 250 500

5

4

5

2k

4k

8k

9

13

14

13

1

2

3

4

12 10 8 6

2

For noise reduction, add 6dB to the above values 0

14

4

Rw10dB / Dnew16dB

50 Acoustic Rating 0

6

1k

16

0

5

63 125 250 500 1k 2k

250

Aerodynamic Performance

200Static

Pressure 2 150Drop (N/m )

10

20

30

40

50

60

70

80

90 100

Face 100Velocity (m/s) 0.92 1.30 1.59 1.84 2.05 2.25 2.43 2.61 2.76 2.90 Nominal 50 Free Area 0Cd 0

42%* 1

* Average over louvre depth

2

3

0.225

200 15 150 10 100 5 50 0 0

Acoustic Louvred Doors Single and double doors are available in the SL-100 louvre range See page 24 for further details

150• 100 50

18

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

250

•

8k

20 250

Face Velocity (m/s)

200

4k

Frequency (Hz)

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Face Velocity (m/s)

0

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

20 250 15 200 150 10 100 5 50

0

0

1

2

3

4

5

Face Velocity (m/s)

0 0

www.iac-noisecontrol.com 63 125 250 500 1k 2k 4k 8k 0

1

2 Frequency (Hz) 3 Face Velocity (m/s)

Errors and Omissions Excepted (E&OE).

Octave Band Centre 150 Frequency (Hz)

Transmission Loss (dB)

Static Pressure Drop (N/m2)

Max. Width 1800

250

www.iac-noisecontrol.com

0

1

2

3

4

5

Face Velocity (m/s)

2 0

“W” ±1

99

Birdscreen Optional

152

4 Varies

0

Typ.

12 305 Typ.

100

Ø12 Holes Typ. Both Sides

14

Standard Module Height 10 305mm minimum, (increasing increments of 305mm) 8 Intermediate heights are available 6

150

206

305

16

Transmission Loss (dB)

200

Module Width 300 - 1800mm “H” ±2

Static Pressure Drop (N/m2)

Weight 30kg/m2

50

76 Non-Standard Base 63 Section 125 250 500 1k 2k 4k 152

8k

Frequency (Hz)

Acoustic Performance

200

Octave Band Centre 150 Frequency (Hz) 100

63

Transmission Loss (dB)

6

125 250 500 6

8

10

14

2k 18

4k 16

8k 15

Rw15dB / Dnew21dB

50 Acoustic Rating 0

1k

For noise reduction, add 6dB to the above values 0

1

2

20 250 200 15 150 10 100 5 50 0 0

3

250

Aerodynamic Performance

200

Static Pressure 150 Drop (N/m2)

10

100 Face

Velocity (m/s)

1

40

50

60

32%*

Free Area Cd 0

30

70

80

90 100

0.53 0.73 0.90 1.04 1.16 1.28 1.37 1.47 1.56 1.64

50 Nominal 0

20

2

Static Pressure Drop (N/m2) Transmission Loss (dB)

Face Velocity (m/s)

* Average over louvre depth

3

4

5

0

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

20 250 15 200 150 10 100 5 50 0

0.127

0

Face Velocity (m/s)

63 125 250 500 1k 2k

0

1

4k

8k

2 Frequency (Hz) 3

250

Acoustic Louvred Doors

200

•

150•

Single and double doors are available in the SL-150 louvre range See page 24 for further details

100 50 0

Static Pressure Drop (N/m2) Transmission Loss (dB)

Face Velocity (m/s)

40 250 35 30 200 25 150 20 15 100 10

Errors and Omissions Excepted (E&OE).

250

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Max. Width 1800

Static Pressure Drop (N/m2)

Birdscreen Optional

Static Pressure Drop (N/m2)

Ø12 Holes Typ. Both Sides

250

Typ.

SL-150

206

Slimshield™ Acoustic Louvres

5 50 0

1

2

3

4 Face Velocity (m/s)

0 0

0

63 125 250www.iac-noisecontrol.com 500 1k 2k 4k 8k 1 2 3 Frequency 4 5 (Hz) Face Velocity (m/s)

19

www.iac-noisecontrol.com 200

150 Slimshield™ Acoustic Louvres 100

25

12

0

1

2

3

8 6 Optional Birdscreen

4

63 125 250 500 1k 2k

150 100

0

0

1

2

200 15

100 5

Acoustic Performance

200

Octave Band Centre 150 Frequency (Hz) 100

Transmission Loss (dB)

63

125 250 500

6

7

10

2k

4k

8k

18

18

14

13

Rw17dB / Dnew23dB

50 Acoustic Rating 0

12

1k

Static Pressure Drop (N/m2) Transmission Loss (dB)

Width 1200 Face VelocityMax. (m/s)

250

1

2

3

4

0

50

200 300

63 125 250 500 1k 2k

1

2

3

4k

8k

4

5

Frequency (Hz) Face Velocity (m/s)

20 250 15 200 150 10 100 5 50

For noise reduction, add 6dB to the above values 0

Ø12 Holes Typ. Both Sides

150 10

0 0

“W” ±1

3

20 250

Non-Standard 50 Base Section

Varies

50

8k

100 Typ.

100 Typ.

Standard Module Height 600mm minimum, (increasing increments of 200mm) Intermediate heights are available

200

4k

Frequency (Hz)

200 Typ.

“H” ±2

Module Width 300 - 1800mm

Static Pressure Drop (N/m2) Transmission Loss (dB)

94.5 Ø12 Holes Typ. Both Sides

Weight 50kg/m2

250

94.5

100

0

5

Face Velocity (m/s)

Optional Birdscreen

Static Pressure Drop (N/m2)

SL-300

10

2

0

Static Pressure Drop (N/m2)

14

4

50

200 Typ.

16

200 Typ.

Transmission Loss (dB)

Static Pressure Drop (N/m2)

250

0

5

0

Face Velocity (m/s)

63 125 250 500 1k 2k

0

1

4k

8k

2 Frequency (Hz) 3

Aerodynamic Performance

200Static

Pressure 150Drop (N/m2)

10

20

30

40

50

60

70

80

90 100

Face 100Velocity (m/s) 0.94 1.31 1.61 1.83 2.13 2.27 2.46 2.63 2.84 2.99 50Nominal

Free Area

0Cd 0

1

45%* 2

* Average over louvre depth

3

4

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

Face Velocity (m/s)

250

40 250 35 30 200 25 150 20 15 100 10 5 50 0 0

0.233

Face Velocity (m/s)

0

63 125 250 500 1k 2k 4k 8k 1 2 3 Frequency 4 5 (Hz)

20

•

Single and double doors are available in the SL-300 louvre range

•

See page 24 for further details

Errors and Omissions Excepted (E&OE).

Acoustic Louvred Doors

Static Pressure Drop (N/m2)

Face Velocity (m/s)

250 200 150 100 50 0

www.iac-noisecontrol.com 0

1

2

3

4 Face Velocity (m/s)

20

50 0

0

1

2

Face Velocity (m/s)

Welded

Standard Head Section

5 50 0 0

3

Welded

100

0

100

50

50 “W” ±1

0

1

0

2

3

4

5

Varies

Max. Width 1200

1

2

8k

4

5

20 250 15 200

Ø12 Holes Typ. Both Sides

150 10 100 5

200

50

200

0

50

603

0

Face Velocity (m/s)

4k

3

Frequency (Hz) Face Velocity (m/s)

Non-Standard 50 Base Section

63 125 250 500 1k 2k

0

4k

8k

2 Frequency (Hz) 3

1

250

Acoustic Performance

200

Octave Band Centre 150 Frequency (Hz)

63

Transmission Loss 100 (dB)

7

125 250 500 9

24

31

2k 33

4k 29

8k 30

Rw26dB / Dnew31dB

50 Acoustic Rating 0

12

1k

Static Pressure Drop (N/m2) Transmission Loss (dB)

1

2

3

30 200 25 150 20 15 100 10 505

For noise reduction, add 6dB to the above values 0

40 250 35

0 0

4 Face Velocity (m/s)

0

63 125 250 500 1k 2k 4k 8k 1 2 3 Frequency 4 5 (Hz) Face Velocity (m/s)

Aerodynamic Performance Static Pressure Drop (N/m2)

10

20

30

40

50

60

70

80

90 100

Face 0.68 0.94 1.15 1.30 1.47 1.61 1.77 1.89 2.02 2.13 Velocity (m/s) Nominal Free Area Cd

45%*

* Average over louvre depth

0.161

250 200 150 100 50 0

0

1

2

3

4 Face Velocity (m/s)

Pressure Drop = ṁ/Cd ṁ = mass flow Cd = Discharge Coefficient

www.iac-noisecontrol.com

Errors and Omissions Excepted (E&OE).

Static Pressure Drop (N/m2)

Face Velocity (m/s)

Static Pressure Drop (N/m2)

200

150

63 125 250 500 1k 2k

200 Typ.

Standard Module Height 600mm minimum, (increasing increments of 200mm) Intermediate heights are available

200

Ø12 Holes Typ. Both Sides

03

Module Width 300 - 1800mm “H” ±2

2 Static Pressure Drop (N/m ) 200 Typ.

94.5

Weight 100kg/m2

Static Pressure Drop (N/m2) Transmission Loss (dB)

Birdscreen Optional

250

Birdscreen Optional 94.5

25

200 Typ.

100

SL-600

150 10

100

Slimshield™ Acoustic Louvres 150

200 15

100 Typ.

200

20 250

100 Typ.

Static Pressure Drop (N/m2) Transmission Loss (dB)

Static Pressure Drop (N/m2)

250

www.iac-noisecontrol.com

21

Varies

www.iac-noisecontrol.com Non-Standard Base Section

50

200 300

Slimshield™ Acoustic Louvres

SL-V300L

Weight 50kg/m2

Ø12 Holes Typ. Both Sides

117

Module Width 300 - 1800mm

86

314

111

108

28

300.4 Overall 200 Centres

Standard Module Height 600mm minimum, (increasing increments of 203mm) Intermediate heights are available

Birdscreen Optional

Ø12mm Hole (Typ. ) Optional Birdguard

Acoustic Performance Octave Band Centre Frequency (Hz)

63

Transmission Loss (dB)

-

125 250 500 5

10

12

1k

2k

4k

8k

17

22

21

21

Transmission Loss (dB)

2

Rw18dB / Dnew26dB

Acoustic Rating

25 20 15 10 5

For noise reduction, add 6dB to the above values

0

63 125 250 500 1k 2k

Face Velocity (m/s)

-

Nominal Free Area

42%*

Aerodynamic Coefficient Discharge Coefficient

20

30

40

8k

50

60

70

80

90 100

1.95 2.39 2.76 3.09 3.39 3.66 3.91 4.15

-

* Average over louvre depth

125 Static Pressure Drop (N/m2)

10

Static Pressure Drop (N/m2)

Aerodynamic Performance Static Pressure Drop (N/m2)

4k

Frequency (Hz)

100 75 50

(k) 8.7

25

0.34

0

0

1

2

3

4

22

www.iac-noisecontrol.com

Errors and Omissions Excepted (E&OE).

Face Velocity (m/s)

22

1

1

7

5

www.iac-noisecontrol.com

Slimshield™ Acoustic Louvres

SL-V300S 300.4 Overall 200 Centres

50

211 Optional Birdguard

200

13

8k

18

21

20

21

10

117

Rw18dB / Dnew29dB

Acoustic Rating

15

5

For noise reduction, add 6dB to the above values

Ø12mm Hole (Typ. )

0

63 125 250 500 1k 2k Optional 4k 8k Birdguard Frequency (Hz)

Static Pressure Drop (N/m2)

125

10

20

40

50

60

70

80

90 100

100

Face Velocity (m/s)

-

Nominal Free Area

32% 50

Aerodynamic Coefficient

30

1.45 1.78 2.06 2.30 2.52 2.72 2.91 3.09

75

*Average over louvre depth

25 0

-

(k) 15.8 0

1

20.252 3

Static Pressure Drop (N/m2)

Aerodynamic Performance 125 100 75 50 25 4 Face Velocity (m/s)

0

0

1

2

3

4 Face Velocity (m/s)

Pressure Drop = ṁ/Cd ṁ = mass flow Cd = Discharge Coefficient

www.iac-noisecontrol.com

Errors and Omissions Excepted (E&OE).

13

4k

108

7

2k

28

-

1k

300.4 Overall 200 Centres

20

111

Transmission Loss (dB)

125 250 500

25

86

63

314

Octave Band Centre Frequency (Hz)

Transmission Loss (dB)

300

Static Pressure Drop (N/m2)

Varies

99 TYP.

minimum, (increasing increments of 305mm) Intermediate heights are available

Acoustic Performance

Discharge Coefficient

Ø12mm Hole (Typ.)

206 Typ.

Standard Module

Birdscreen Optional

Non-Standard Base Section

Module Width 300 - 1800mm

Ø12 HolesHeight Typ. Both 600mm Sides

200 Typ.

Ø12 Holes Typ. Both Sides

206

Weight 55kg/m2

100 Typ.

100 Typ.

200 Typ.

100

94.5

Optional Birdscreen

23

Acoustic Louvred Doors • Single and double doors are available in the entire IAC Acoustics louvre range • The structural minimum is 850mm and is available up to 1250 x 2950mm high as standard for a single door and 2500 x 2950mm high for a double door.

Other widths and heights are available on request • All doors are supplied with a union oval lock, latch and pull handle • Acoustic louvred doors can be fitted with bird guards and insect meshes on request • Doors can be polyester powder coated to match adjoining louvres • Materials for the door and door frame include galvanised steel, stainless steel and aluminium

24

25

A Quality Solution All IAC products are designed to stand the test of time and manufactured to suit the application. From offshore environments to extremes in weather and ambient temperature, IAC Acoustics can produce a highly engineered solution to your noise control issue.

Harsh Environments 26

In addition to providing acoustic louvres located in everyday environments, IAC also has the ability to modify products to suit more demanding applications.

Contacts Head Office - Winchester, UK T: +44 (0) 1962 873 000 E: info@iacl-uk.com

Italy T: +39 0445 575 669 F: +39 0445 575 002 E: italy.info@iac-noisecontrol.com

Australia T: +61 (0) 2 8781 0400 F: +61 (0) 2 9725 2939 E: info@iac-australia.com.au

Kuwait T: +965 2294 2000 E: kuwait.info@iac-noisecontrol.com

China (Dongguan Office) T: +86 (0) 769 89899966 802 F: +86 (0) 769 89899966 810 E: china.sales@iac-china.com

United Arab Emirates T: +971 (0) 4451 7877 E: uae.info@iac-noisecontrol.com

China (SH Office) T: +86 (0) 21 68825328 E: test@iac-china.com Denmark T: +45 36 77 88 00 F: +45 36 78 12 30 E: mail@iac-nordic.dk Germany T: +49 (0) 2163 9991 0 F: +49 (0) 2163 9991 23 E: deutschland@iac-gmbh.de Ireland T: +353 1 282 8043 F: +353 1 282 8427 E: ireland.info@iac-noisecontrol.com Israel T: +972 894 284 83 F: +972 894 284 86 E: hna.info@iac-noisecontrol.com

27

UK-P2-LOU-0254-201806-05

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