Type WG

For the most diverse applications, available also in large sizes

External weather louvres as a protection of air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings

  • Maximum width of 2400 mm, maximum height of 2310 mm, maximum area of 4 m² (aluminium variant also for continuous horizontal runs)
  • Low differential pressure due to aerofoil blades
  • Low air-regenerated noise
  • All aerodynamic data is measured in aerodynamics and acoustics laboratories
  • Available in standard sizes and many intermediate sizes
  • Simple and quick installation due to perimeter border
  • Variants made of galvanised sheet steel, aluminium or stainless steel
  • Flexible arrangement of sections for covering large areas (should then be fixed on a support structure which is to be provided by others)


Optional equipment and accessories

  • Installation subframe
  • Can be combined with multileaf or non-return dampers
  • Insect screen
  • Powder-coated or anodised

External weather louvre, variant WG 00136486_0

External weather louvre made of galvanised steel sections

  • Application
  • Description

Application

  • External weather louvres of Type WG for the fresh air and exhaust air openings of air conditioning systems
  • Protection against the direct ingress of rain as well as against leaves and birds
  • Recommended face velocity for fresh air openings: 2 – 2.5 m/s max.

Special characteristics

  • Large areas can be provided by arranging multiple single sections horizontally and/or vertically (subdivided construction); single sections made of aluminium can also be combined into continuous horizontal runs
  • Low differential pressure and low air-regenerated noise due to aerofoil blades
  • Simple and quick installation due to perimeter border
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Silicone free

Nominal sizes

  • B: 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400 mm (intermediate sizes 201 – 2399 mm in increments of 1 mm)
  • Width subdivided max. = 4900 mm (intermediate sizes 2401 – 4899 mm in increments of 1 mm)
  • H: 165, 330, 495, 660, 825, 990, 1155, 1320, 1485, 1650, 1815, 1980, 2145, 2310 mm (intermediate sizes 166 – 2309 mm in increments of 1 mm)
  • Hight subdivided max. = 4720 mm (intermediate sizes 2311 – 4719 mm in increments of 1 mm)
  • Any combination of B × H
  • Undivided construction up to 4 m²

WG-B-AL

  • WG-B-AL-M (middle section) B: 2000 mm
  • WG-B-AL-E (end section) B: 1000 – 2000 mm (intermediate sizes 1001 – 1999 mm in increments of 1 mm)
  • H: 165 – 1980 mm (intermediate sizes 166 – 1979 mm in increments of 1 mm)

Variants

  • WG: External weather louvre made of galvanised sheet steel
  • WG-A2: External weather louvre made of stainless steel
  • WG-AL: External weather louvre made of aluminium
  • WG-B-AL: External weather louvre made of aluminium, for continuous horizontal runs

Construction

Cover grille

  • Wire mesh, galvanised steel (only WG, WG-AL, WG-B-AL)
  • 1: With insect screen, galvanised steel (only WG, WG-AL, WG-B-AL)
  • 2: With wire mesh, stainless steel (only WG-AL, WG-B-AL)
  • 3: With insect screen and wire mesh, stainless steel (only WG-A2, WG-AL, WG-B-AL)


Border

  • Border fixing holes
  • U: Without fixing holes

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Visible mullion or stabilising mullion at the rear, from B = 1385 mm

Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of external weather louvres

Construction features

  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, mullion and blades made of formed galvanised sheet steel, aluminium or stainless steel
  • Wire mesh made of galvanised steel or stainless steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Maintenance

  • Maintenance-free as construction and materials are not subject to wear

Technical information

Function, Technical data, Quick sizing, Specification text, Order code, Related products

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

Functional description

External weather louvres are externally mounted air transfer devices for the fresh air and exhaust air of air conditioning systems. They are installed in external walls and façades. Their narrowly arranged blades give good protection against the direct ingress of rain as well as against leaves and birds.

Under certain unfavourable conditions, such as heavy rain, and depending on the airflow velocity it might happen that slight quantities of water enter together with the air.

This is why the airflow velocity in fresh air openings should not exceed 2 – 2.5 m/s.

Nominal sizes

200 × 165 – 2400 × 1650 / 1600 × 2310 mm

Width subdivided

Up to 4900 mm

Height subdivided

Up to 4720 mm

Horizontal runs (WG-B-AL)

H: 165 – 1980 mm

Volume flow rate range (undivided construction)

40 – 9390 l/s or 144 – 33804 m³/h at 2.5 m/s

Free area

Approx. 60 %, with insect screen approx. 45 %

Total differential pressure – exhaust air

30 Pa at 2.5 m/s

Total differential pressure – fresh air

35 Pa at 2.5 m/s


Quick sizing tables provide a good overview of the volume flow rates with an airflow velocity of 2.5 m/s. Values for intermediate widths can be interpolated. Precise intermediate values and volume flow rates for other airflow velocities can be calculated with our Easy Product Finder design programme.

The sound power levels LWA apply to external weather louvres with a flow cross section of 1 m².

Sizing example

Given data

V =1400 l/s (5040 m³/h)

v = 2.5 m/s

Fresh air, installation type B

Maximum width: 800 mm

Quick sizing

WG/800 × 825 mm

Calculation procedure

A = 0.800 × (0.825 –0.085) = 0.592 m²

v = V ∕ A = 1400 ∕ 0.592 ( ∕ 1000) = 2.4 m/s

Δpst = 35 Pa

LWA = 50 dB(A)

WG, width 200 – 1200 mm, volume flow rate at 2.5 m/s

Height Width [mm]
Height 200 400 600 800 1000 1200
mm l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h

165

40

144

80

288

120

432

160

576

200

720

240

864

330

125

450

245

882

370

1332

490

1764

615

2214

735

2646

495

205

738

410

1476

615

2214

820

2952

1025

3690

1230

4428

660

290

1044

575

2070

865

3114

1150

4140

1440

5184

1725

6210

825

370

1332

740

2664

1110

3996

1480

5328

1850

6660

2220

7992

990

455

1638

905

3258

1360

4896

1810

6516

2265

8154

2715

9774

1155

535

1926

1070

3852

1605

5778

2140

7704

2675

9630

3210

11556

1320

620

2232

1235

4446

1855

6678

2470

8892

3090

11124

3705

13338

1485

700

2520

1400

5040

2100

7560

2800

10080

3500

12600

4200

15120

1650

785

2826

1565

5634

2350

8460

3130

11268

3915

14094

4695

16902

1815

865

3114

1730

6228

2595

9342

3460

12456

4325

15570

5190

18684

1980

950

3420

1895

6822

2845

10242

3790

13644

4740

17064

5690

20484

2145

1030

3708

2060

7416

3090

11124

4120

14832

5150

18540

6180

22248

2310

1115

4014

2225

8010

3340

12024

4450

16020

5560

20016

6680

24048

2740

1235

4446

2470

8892

3705

13338

4940

17784

6180

22248

7410

26676

3070

1400

5040

2800

10080

4200

15120

5600

20160

7000

25200

8400

30240

3400

1565

5634

3130

11268

4695

16902

6260

22536

7830

28188

9390

33804

3730

1730

6228

3460

12456

5190

18684

6920

24912

8650

31140

10380

37368

4060

1895

6822

3790

13644

5690

20484

7580

27288

9480

34128

11370

40932

4390

2060

7416

4120

14832

6180

22248

8240

29664

10300

37080

12360

44496

4720

2225

8010

4450

16020

6680

24048

8900

32040

11130

40068

13350

48060


WG, width 1400 – 2400 mm, volume flow rate at 2.5 m/s

Height Width [mm]
Height 1400 1600 1800 2000 2200 2400
mm l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h

165

280

1008

320

1152

360

1296

400

1440

440

1584

480

1728

330

860

3096

980

3528

1105

3978

1225

4410

1350

4860

1470

5292

495

1435

5166

1640

5904

1845

6642

2050

7380

2255

8118

2460

8856

660

2015

7254

2300

8280

2590

9324

2875

10350

3165

11394

3450

12420

825

2590

9324

2960

10656

3330

11988

3700

13320

4070

14652

4440

15984

990

3170

11412

3620

13032

4075

14670

4525

16290

4980

17928

5430

19548

1155

3745

13482

4280

15408

4815

17334

5350

19260

5890

21204

6420

23112

1320

4325

15570

4940

17784

5560

20016

6180

22248

6790

24444

7410

26676

1485

4900

17640

5600

20160

6300

22680

7000

25200

7700

27720

8400

30240

1650

5480

19728

6260

22536

7040

25344

7830

28188

8610

30996

9390

33804

1815

6060

21816

6920

24912

7790

28044

8650

31140

9520

34272

10380

37368

1980

6630

23868

7580

27288

8530

30708

9480

34128

10420

37512

11370

40932

2145

7210

25956

8240

29664

9270

33372

10300

37080

11330

40788

12360

44496

2310

7790

28044

8900

32040

10010

36036

11130

40068

12240

44064

13350

48060

2740

8650

31140

9880

35568

11120

40032

12350

44460

13590

48924

14820

53352

3070

9800

35280

11200

40320

12600

45360

14000

50400

15400

55440

16800

60480

3400

10960

39456

12520

45072

14090

50724

15650

56340

17220

61992

18780

67608

3730

12110

43596

13840

49824

15570

56052

17300

62280

19030

68508

20760

74736

4060

13270

47772

15160

54576

17060

61416

18950

68220

20850

75060

22740

81864

4390

14420

51912

16480

59328

18540

66744

20600

74160

22660

81576

24720

88992

4720

15580

56088

17800

64080

20030

72108

22250

80100

24480

88128

26700

96120


WG, width 2900 – 4900 mm, volume flow rate at 2.5 m/s

Height Width [mm]
Height 2900 3300 3700 4100 4500 4900
mm l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h l/s m³/h

165

560

2016

640

2304

720

2592

800

2880

880

3168

960

3456

330

1715

6174

1960

7056

2205

7938

2450

8820

2695

9702

2940

10584

495

2870

10332

3280

11808

3690

13284

4100

14760

4510

16236

4920

17712

660

4025

14490

4600

16560

5180

18648

5750

20700

6330

22788

6900

24840

825

5180

18648

5920

21312

6660

23976

7400

26640

8140

29304

8800

31968

990

6340

22824

7240

26064

8150

29340

9050

32580

9960

35856

10860

39096

1155

7490

26964

8560

30816

9630

34668

10700

38520

11770

42372

12840

46224

1320

8650

31140

9880

35568

11120

40032

12350

44460

13590

48924

14820

53352

1485

9800

35280

11200

40320

12600

45360

14000

50400

15400

55440

16800

60480

1650

10960

39456

12520

45072

14090

50724

15650

56340

17220

61992

18780

67608

1815

12110

43596

13840

49824

15570

56052

17300

62280

19030

68508

20750

74736

1980

13270

47772

15160

54576

17060

61416

18950

68220

20850

75060

22750

81864

2145

14420

51912

16480

59328

18540

66744

20600

74160

22660

81576

24700

88992

2310

15580

56088

17800

64080

20030

72108

22250

80100

24480

88128

26700

96120

2740

17290

62244

19760

71136

22230

80028

24700

88920

27170

97812

29650

106704

3070

19600

70560

22400

80640

25200

90720

28000

100800

30800

110880

33600

120960

3400

21910

78876

25040

90144

28170

101412

31300

112680

34430

123948

37550

135216

3730

24220

87192

27680

99648

31140

112104

34600

124560

38060

137016

41500

149472

4060

26530

95508

30320

109152

34110

122796

37900

136440

41690

150084

45500

163728

4390

28840

103824

32960

118656

37080

133488

41200

148320

45320

163152

49450

177984

4720

31150

112140

35600

128160

40050

144180

44500

160200

48950

176220

53400

192240


Differential pressure and sound power level

v Installation type
v A and C B and D
v Δpt LWA Δpt LWA
m/s Pa dB(A) Pa dB(A)

1.5

10

32

14

34

2

20

41

25

43

2.5

30

48

35

50

3

45

54

55

56

4

75

63

95

66

5

115

70

145

73

6

170

76

210

79


Rectangular external weather louvre as a protection of air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings.

Ready-to-install component which consists of a border, aerofoil rain defence blades, and a bird mesh at the rear.

Special characteristics

  • Large areas can be provided by arranging multiple single sections horizontally and/or vertically (subdivided construction); single sections made of aluminium can also be combined into continuous horizontal runs
  • Low differential pressure and low air-regenerated noise due to aerofoil blades
  • Simple and quick installation due to perimeter border
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Silicone free

Materials and surfaces

  • Border, mullion and blades made of formed galvanised sheet steel, aluminium or stainless steel
  • Wire mesh made of galvanised steel or stainless steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Construction

Cover grille

  • Wire mesh, galvanised steel (only WG, WG-AL, WG-B-AL)
  • 1: With insect screen, galvanised steel (only WG, WG-AL, WG-B-AL)
  • 2: With wire mesh, stainless steel (only WG-AL, WG-B-AL)
  • 3: With insect screen and wire mesh, stainless steel (only WG-A2, WG-AL, WG-B-AL)


Border

  • Border fixing holes
  • U: Without fixing holes

Technical data

  • Nominal sizes: 200 × 165 – 2400 × 1650/1600 × 2310 mm
  • Width subdivided: Up to 4900 mm
  • Height subdivided: Up to 4720 mm
  • Continuous horizontal runs (WG-B-AL): Height 165 – 1980 mm
  • Volume flow rate range (undivided construction): 40 – 9390 l/s or 144 – 33804 m³/h at 2.5 m/s
  • Free area: approx. 60 %, with insect screen approx. 45 %
  • Total differential pressure – exhaust air: 30 Pa at 2.5 m/s
  • Total differential pressure – fresh air: 35 Pa at 2.5 m/s

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Order example: WG–AL–1–U/1200×1150/S2–E6-C-31

Material

Aluminium

Construction

Insect screen, galvanised steel, border without fixing holes

Nominal size

1200×1150 mm

Installation subframe

Without

Surface

Anodised to EURAS standard, E6-C-31, pale bronze


Order example: WG–B–AL/4500×1980/ER

Material

Aluminium

Section

1 right end section of 1250 mm, 1 middle section of 2000 mm, 1 left end section of 1250 mm

Construction

Wire mesh

Nominal size

4500×1980 mm

Installation subframe

With

Surface

Standard construction


 

Variants, Dimensions and weight, Product details

  • Variants
  • Dimensions and weight
  • Product details

WG

Variant

  • External weather louvre made of galvanised sheet steel

Construction

  • Galvanised sheet steel
  • 1: With insect screen, galvanised steel
  • U: Border without fixing holes

1 can be combined with U

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Visible mullion from B = 1385 mm

Construction features

  • Border, material thickness 1.5 mm
  • Blades, material thickness 0.63 mm
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, mullion and blades made of formed galvanised sheet steel
  • Wire mesh made of galvanised steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

WG-A2

Variant

  • External weather louvres made of stainless steel

Construction

  • Stainless steel
  • 3: With insect screen, stainless steel
  • U: Border without fixing holes

3 can be combined with U

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Visible mullion from B = 1385 mm

Construction features

  • Border, material thickness 1.5 mm
  • Blades, material thickness 0.63 mm
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, mullion, blades and wire mesh made of stainless steel, material no. 1.4301
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

WG-AL

Variant

  • External weather louvres made of aluminium

Construction

  • Aluminium
  • 1: With insect screen, galvanised steel
  • 2: With wire mesh, stainless steel
  • 3: With insect screen and wire mesh, stainless steel
  • U: Border without fixing holes

1, 2, 3 can be combined with U

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Stabilising mullion at the rear, from B = 1385 mm

Construction features

  • Border, material thickness 1.7 mm
  • Blades, material thickness 1.35 mm
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, stabilising mullion and blades made of extruded aluminium sections, material nr. EN AW-6060 T66
  • Wire mesh made of galvanised steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour
  • S2: Anodised to EURAS standard, E6-C-31...35
  • S3: Anodised to EURAS standard, E6-C-0

WG-B-AL

Variant

  • External weather louvres made of aluminium, for continuous horizontal runs

Construction

  • Aluminium
  • 1: With insect screen, galvanised steel
  • 2: With wire mesh, stainless steel
  • 3: With insect screen and wire mesh, stainless steel
  • U: Border without fixing holes

1, 2, 3 can be combined with U

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Stabilising mullion at the rear (for stability), from E/M = 1300 mm

Construction features

  • Continuous horizontal runs include either two end sections (up to B = 4000 mm) or two end sections plus any number of middle sections (from B = 4001 mm)
  • Border, material thickness 1.7 mm
  • Blades, material thickness 1.35 mm
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, stabilising mullion and blades made of extruded aluminium sections, material nr. EN AW-6060 T66
  • Wire mesh made of galvanised steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour
  • S2: Anodised to EURAS standard, E6-C-31...35
  • S3: Anodised to EURAS standard, E6-C-0

Materials

Part Order code detail Material Notes

Border

Profiled, galvanised sheet steel

Material thickness 1.5 mm

Border

A2

Stainless steel, material no. 1.4301

Material thickness 1.5 mm

Border

AL

Extruded aluminium sections, material no. EN AW-6060 T66

Material thickness 1.7 mm

Blades

Profiled, galvanised sheet steel

Material thickness 0.63 mm

Blades

A2

Stainless steel, material no. 1.4301

Material thickness 0.63 mm

Blades

AL

Extruded aluminium sections, material no. EN AW-6060 T66

Material thickness 1,35 mm

Mullion

Profiled, galvanised sheet steel

From B = 1385 mm

Mullion

A2

Stainless steel, material no. 1.4301

From B = 1385 mm

Stabilising mullion

AL

Extruded aluminium sections, material no. EN AW-6060 T66

From B = 1385 mm

Wire mesh

Galvanised steel


Wire mesh

2

Stainless steel, material no. 1.4301

Only WG-AL, WG-B-AL

Wire mesh

3

Stainless steel, material no. 1.4301

Only WG-A2, WG-AL, WG-B-AL

Insect screen

1

Galvanised steel

Only WG, WG-AL, WG-B-AL

Insect screen

3

Stainless steel, material no. 1.4301

Only WG-A2, WG-AL, WG-B-AL


Surfaces

Part Order code detail Surface Notes

Border and blades

Untreated


Border and blades

P1-RAL ...

Powder-coated, RAL colour ... CLASSIC


Border and blades

PS-NCS ...

Powder-coated, NCS colour ...


Border and blades

S2

Anodised to EURAS standard, E6-C-31 to E6-C-35

Only WG-AL, WG-B-AL

Border and blades

S3

Anodised to EURAS standard, E6-C-0

Only WG-AL, WG-B-AL


Flow cross section to calculate the airflow velocity

  • Undivided louvres: A = B × (H − 0.085)
  • Width subdivided louvres: A = 2B × (H − 0.085)
  • Height subdivided louvres: A = B × 2(H − 0.085)
  • Horizontal runs: A = ((E − 0.02) + n(M − 0.04) + (E − 0.02)) × (H − 0.085)

Unit of measure for B and H: mm

WG, WG-A2, weight

H B [mm]
H 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400
mm kg

165

3

4

5

6

8

9

11

13

14

15

17

19

330

3

5

6

7

9

11

13

14

15

17

19

20

495

5

6

8

9

11

13

16

18

19

21

24

25

660

6

7

9

11

13

16

19

21

22

26

28

30

825

8

9

12

13

16

18

22

24

26

30

33

36

990

9

10

13

15

18

21

25

28

30

34

38

41

1155

11

12

15

17

20

24

28

31

33

39

43

46

1320

12

14

16

18

22

26

31

35

37

43

48

52

1485

14

16

18

20

24

29

34

38

41

47

52

57

1650

15

16

20

22

27

31

37

41

44

51

57

62

1815

17

18

21

24

29

34

40

45

48

56

62


1980

18

19

22

26

31

37

43

48

52

60



2145

20

21

23

28

33

39

46

52

56




2310

21

23

25

30

35

42

49

55






WG, WG-A2, width subdivided, weight

H B1 [mm]
H 1900 2100 2300 2500 2900 3300 3700 4100 4500 4900
H B [mm]
H 900 1000 1100 1200 1400 1600 1800 2000 2200 2400
mm kg

165

14

15

17

18

22

25

27

30

34

37

330

16

18

20

21

26

28

30

34

38

40

495

20

22

24

26

32

35

37

43

47

50

660

24

27

29

31

38

42

44

51

57

61

825

28

31

34

37

44

49

52

60

66

71

990

32

36

39

42

50

56

59

68

76

82

1155

37

40

44

47

56

62

67

77

86

93

1320

41

44

48

52

62

69

74

86

95

103

1485

45

49

53

57

68

76

81

94

105

114

1650

49

53

58

63

74

83

89

103

114

124

1815

53

58

63

68

80

90

96

111

124


1980

57

62

68

73

86

96

104

120



2145

61

66

72

78

92

103

111




2310

65

71

77

83

98

110






WG, WG-A2, height subdivided, weight

H1 H B [mm]
H1 H 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400
mm kg

2410

1155

21

24

30

33

40

47

56

62

67

77

86

93

2740

1320

24

28

33

37

44

52

62

69

74

86

95

103

3070

1485

27

31

37

41

49

57

68

76

81

94

105

114

3400

1650

30

32

40

44

53

63

74

83

89

103

114

124

3730

1815

33

36

42

48

58

68

80

90

96

111

124


4060

1980

36

38

44

52

62

73

86

96

104

120



4390

2145

39

42

46

56

66

78

92

103

111




4720

2310

42

46

50

60

71

83

98

110






WG-AL, weight

H B [mm]
H 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400
mm kg

165

2

3

4

5

6

7

8

9

10

11

12

13

330

2

3

4

5

6

7

8

9

10

11

12

13

495

3

4

5

6

7

8

9

10

11

14

16

19

660

4

5

6

7

8

10

12

14

15

17

19

22

825

5

6

7

8

10

12

14

16

19

21

24

26

990

6

7

8

10

12

15

17

19

21

24

27

30

1155

7

8

10

12

14

16

18

21

24

27

30

33

1320

8

10

12

14

16

18

21

24

27

30

33

36

1485

10

12

14

16

18

21

24

27

30

33

36

39

1650

12

14

16

18

21

24

27

30

33

36

39

42

1815

14

16

18

21

24

27

30

33

36

39

42


1980

16

18

20

24

27

30

33

36

39

42



2145

18

20

22

27

30

33

36

39

42




2310

20

22

24

29

33

36

39

42






WG-AL, width subdivided, weight

H B1 [mm]
H 1900 2100 2300 2500 2900 3300 3700 4100 4500 4900
H B [mm]
H 900 1000 1100 1200 1400 1600 1800 2000 2200 2400
mm kg

165

10

11

12

13

15

17

19

21

23

25

330

11

12

13

14

16

18

20

22

24

26

495

13

14

15

16

18

20

22

28

32

38

660

15

16

18

20

24

28

30

34

38

44

825

18

20

22

24

28

32

38

42

48

52

990

22

24

27

30

34

38

42

48

54

60

1155

26

28

30

32

36

42

48

54

60

66

1320

30

32

34

36

42

48

54

60

66

72

1485

34

36

39

42

48

54

60

66

72

78

1650

39

42

45

48

54

60

66

72

78

84

1815

45

48

51

54

60

66

72

78

84


1980

51

54

57

60

66

72

78

84



2145

57

60

63

66

72

78

84




2310

62

66

69

72

78

84






WG-AL, height subdivided, weight

H1 H B [mm]
H1 H 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400
mm kg

2410

1155

14

16

20

24

28

32

36

42

48

54

60

66

2740

1320

16

20

24

28

32

36

42

48

54

60

66

72

3070

1485

20

24

28

32

36

42

48

54

60

66

72

78

3400

1650

24

28

32

36

42

48

54

60

66

72

78

84

3730

1815

28

32

36

42

48

54

60

66

72

78

84

90

4060

1980

32

36

40

48

54

60

66

72

78

84

90

96

4390

2145

36

40

44

54

60

66

72

78

84

90

96

102

4720

2310

40

44

48

58

66

72

78

84

90

96

102

108


WG-B-AL, weight

H M [mm] E [mm]
H 2000 1000 1200 1400 1600 1800 2000
mm kg

165

10

5

6

7

8

9

10

330

11

6

7

8

9

10

11

495

14

7

8

9

10

11

14

660

17

8

10

12

14

15

17

825

21

10

12

14

16

19

21

990

24

12

15

17

19

21

24

1155

27

14

16

18

21

24

27

1320

30

16

18

21

24

27

30

1485

33

18

21

24

27

30

33

1650

36

21

24

27

30

33

36

1815

39

24

27

30

33

36

39

1980

42

27

30

33

36

39

42


WG, standard sizes, width, no. of border fixing holes

Width No. of holes
B n T₁ T₂
mm mm

200

1

100

400

2

240

80

600

2

440

80

800

2

640

80

1000

3

420

80

1200

3

520

80

1400

3

620

80

1600

4

480

80

1800

4

547

80

2000

4

613

80

2200

5

510

80

2400

5

560

80


WG, standard sizes, height, no. of border fixing holes

Height No. of holes
H n T₃ T₄
mm mm

165

1

83

330

1

165

495

1

248

660

1

330

825

1

413

990

1

495

1155

1

578

1320

2

445

437

1485

2

500

492

1650

2

555

547

1815

2

610

602

1980

3

499

491

2145

3

540

533

2310

3

581

574


WG, intermediate sizes, width, no. of border fixing holes

Width No. of holes
B n T₁ T₂
mm mm

165 – 384

1

B ∕ 2

385 – 881

2

B − 160

80

882 – 1481

3

(B − 160) ∕ 2

80

1482 – 2081

4

(B − 160) ∕ 3

80

2082 – 2399

5

(B − 160) ∕ 4

80


WG, intermediate sizes, height, no. of border fixing holes

Height No. of holes
H n T₃ T₄
mm mm

166 – 1319

1

H ∕ 2

1321 – 1979

2

(H + 15) ∕ 3

T₃ − 7.5

1981 – 2309

3

(H + 15) ∕ 4

T₃ − 7.5


WG-B-AL, standard sizes, width, no. of border fixing holes

End section No. of holes
E n T₁ T₂
mm mm

1000

3

410

80

1200

3

510

80

1400

4

407

80

1600

4

473

80

1800

4

540

80

2000

4

607

80


WG-B-AL, standard sizes, height, no. of border fixing holes

Height No. of holes
H n T₃ T₄
mm mm

165

1

83

330

1

165

495

1

248

660

1

330

825

1

413

990

1

495

1155

1

578

1320

2

445

437

1485

2

500

492

1650

2

555

547

1815

2

610

602

1980

3

499

491


WG-B-AL, intermediate sizes, width, no. of border fixing holes

End section No. of holes
E n T₁ T₂
mm mm

1001 – 1481

3

(E − 180) ∕ 2

80

1482 – 1999

4

(E − 180) ∕ 3

80


WG-B-AL, intermediate sizes, height, no. of border fixing holes

Height No. of holes
H n T₃ T₄
mm mm

1001 – 1319

1

H ∕ 2

1321 – 1979

2

(H + 15) ∕ 3

T₃ − 7.5


Installation details, Basic information and nomenclature

  • Installation details
  • Basic information and nomenclature

Installation and commissioning

  • Install with or without installation subframe (construction U only without installation subframe)
  • Install subdivided constructions either horizontally next to each other or vertically on top of each other
  • Install end and middle sections of continuous horizontal runs individually, one after the other
  • Install louvres for large areas on a support structure (to be provided by others)

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise for the louvre

A [m²]

Upstream cross section

v [m/s]

Airflow velocity based on the upstream cross section

vt [m/s]

Airflow velocity based on the upstream cross section (type NL)

V [m³/h] and [l/s]

Volume flow rate

Δpt [Pa]

Total differential pressure


All sound power levels are based on 1 pW.

Principal dimensions

B [mm]

Duct width

B₁ [mm]

Duct width for subdivided louvres

H [mm]

Duct height

H₁ [mm]

Duct height for subdivided louvres

n [ ]

Number of flange screw holes

m [kg]

Weight

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For general question regarding products or services you can also call:
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