Type WGK

With small blade pitch

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 1997 mm, maximum height of 1997 mm
  • 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


Optional equipment and accessories

  • Installation subframe
  • Insect screen
  • Powder-coated or anodised

External weather louvre, variant WGK 00136483_0

External weather louvre made of aluminium sections, anodised

Regular blades
00137387_0


00137387_0
00137391_0
  • Application
  • Description

Application

  • External weather louvres of Type WGK, with small blade pitch, 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

  • 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: 97, 147, 197, 297, 397, 497, 597, 797, 997, 1197, 1397, 1597, 1797, 1997 mm (intermediate sizes 98 – 1996 mm in increments of 1 mm)
  • H: 97,147, 197, 247, 297, 347, 397, 447, 497, 597, 797, 997, 1197, 1397, 1597, 1797, 1997 mm (intermediate sizes 122 – 1972 mm in increments of 25 mm)

Construction

Cover grille

  • Wire mesh
  • 1: With insect screen, galvanised steel
  • 3: With insect screen, stainless steel


Border

  • Border fixing holes
  • U: Without fixing holes

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Visible stabilising mullion from B = 597 mm, two mullions from B = 1198 mm, three mullions from B = 1797 mm

Accessories

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

Construction features

  • Border, material thickness 1.3 mm
  • Blades, material thickness 1.35 mm
  • Free area of approx. 60 %, with insect screen approx. 45 %
  • Wire mesh at the rear, mesh aperture 6 × 6 × 0.63 mm
  • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
  • Border fixing holes

Materials and surfaces

  • Border, blades and stabilising mullions made of extruded aluminium sections, material no. EN AW-6060 T66, anodised to EURAS standard, E6-C-0, natural colour
  • Wire mesh made of galvanised 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
Schematic illustration of WGK-AL 00103950_0.
① Border
② Regular blades
③ Bottom blade
④ Fixing holes
⑤ Wire mesh; additional insect screen as an option
⑥ Reinforcing strut from H = 597
⑦ Stabilising mullion from B = 597


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

97 × 97 – 1997 × 997mm / 1197 × 1997 mm

Volume flow rate range

15 – 5890 l/s or 54 – 21204 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


Installation into rectangular ducts (installation types A and B)
00102068_0..
A Exhaust air
B Fresh air


00102068_0..
00102069_0.

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.

WGK, width 97 – 597 mm, volume flow rate at 2.5 m/s

Height Width [mm]
Height 97 147 197 297 397 497 597
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 l/s m³/h

97

15

54

25

90

35

126

50

180

70

252

85

306

105

378

147

30

108

45

162

60

216

90

324

120

432

150

540

180

648

197

40

144

60

216

85

306

125

450

170

612

210

756

250

900

247

55

198

80

288

110

396

165

594

215

774

270

972

325

1170

297

65

234

100

360

130

468

200

720

265

954

335

1206

400

1440

347

75

270

115

414

155

558

235

846

315

1134

395

1422

475

1710

397

90

324

135

486

180

648

275

990

365

1314

460

1656

550

1980

447

100

360

155

558

205

738

310

1116

415

1494

520

1872

625

2250

497

115

414

170

612

230

828

350

1260

465

1674

585

2106

700

2520

597

140

504

210

756

280

1008

420

1512

565

2034

705

2538

850

3060

797

185

666

285

1026

380

1368

570

2052

765

2754

955

3438

1150

4140

997

235

846

355

1278

475

1710

720

2592

960

3456

1205

4338

1445

5202

1197

285

1026

430

1548

575

2070

870

3132

1160

4176

1450

5220

1745

6282

1397

330

1188

505

1818

675

2430

1015

3654

1360

4896

1700

6120

2045

7362

1597

380

1368

575

2070

775

2790

1165

4194

1555

5598

1950

7020

2340

8424

1797

430

1548

650

2340

870

3132

1315

4734

1755

6318

2200

7920

2640

9504

1997

475

1710

725

2610

970

3492

1460

5256

1955

7038

2445

8802

2940

10584


WGK, width 797 – 1997 mm, volume flow rate at 2.5 m/s

Height Width [mm]
Height 797 997 1197 1397 1597 1797 1997
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 l/s m³/h

97

135

486

170

612

205

738

240

864

275

990

310

1116

345

1242

147

235

846

295

1062

355

1278

415

1494

475

1710

535

1926

595

2142

197

335

1206

420

1512

505

1818

590

2124

675

2430

760

2736

845

3042

247

435

1566

545

1962

655

2358

765

2754

875

3150

985

3546

1095

3942

297

535

1926

670

2412

805

2898

940

3384

1075

3870

1210

4356

1345

4842

347

635

2286

795

2862

955

3438

1115

4014

1275

4590

1435

5166

1595

5742

397

735

2646

920

3312

1105

3978

1290

4644

1475

5310

1660

5976

1840

6624

447

835

3006

1045

3762

1255

4518

1465

5274

1675

6030

1880

6768

2090

7524

497

935

3366

1170

4212

1405

5058

1640

5904

1870

6732

2105

7578

2340

8424

597

1135

4086

1420

5112

1705

6138

1985

7146

2270

8172

2555

9198

2840

10224

797

1530

5508

1915

6894

2300

8280

2685

9666

3070

11052

3455

12438

3840

13824

997

1930

6948

2415

8694

2900

10440

3385

12186

3870

13932

4355

15678

4840

17424

1197

2330

8388

2915

10494

3500

12600

4085

14706

4665

16794



1397

2730

9828

3410

12276

4095

14742

4780

17208





1597

3125

11250

3910

14076

4695

16902







1797

3525

12690

4410

15876

5290

19044







1997

3925

14130

4910

17676

5890

21204








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

  • 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, blades and stabilising mullions made of extruded aluminium sections, material no. EN AW-6060 T66, anodised to EURAS standard, E6-C-0, natural colour
  • Wire mesh made of galvanised steel
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, NCS or DB colour

Construction

Cover grille

  • Wire mesh
  • 1: With insect screen, galvanised steel
  • 3: With insect screen, stainless steel


Border

  • Border fixing holes
  • U: Without fixing holes

Technical data

  • Nominal sizes: 97 × 97 – 1997 × 997 mm / 1197 × 1997 mm
  • Volume flow rate range: 15 – 5890 l/s or 54 – 21204 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.

00240709_0

 Type
WGK       External weather louvre with small blade pitch

 Material
AL       Anodised aluminium

 Construction
       No entry: wire mesh, galvanised steel
1       Insect screen, galvanised steel
3       Insect screen, stainless steel

 Border
       No entry: With fixing holes
U       Without fixing holes

 

 Nominal size [mm]
       B × H

 Installation subframe
       No entry: None
ER       With (not for construction without fixing holes)

 Surface
       No entry: anodised to EURAS standard, E6-C-0, S3, natural colour
P1       Powder-coated, RAL Classic colour
PS       Powder-coated, DB colour
S2       Anodised to EURAS standard, E6-C-… (31 to 35)

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

Order example: WGK–AL–1/997×1622/P1–RAL 9006

Material

Aluminium

Construction

Insect screen, galvanised steel

Nominal size

997×1622 mm

Installation subframe

Without

Surface

Powder-coated, RAL 9006, white aluminium


 

Dimensions and weight, Product details

  • Dimensions and weight
  • Product details
WGK 00147184_0


Flow cross section to calculate the airflow velocity

  • A = B × (H − 0.028)

Unit of measure for B and H: mm

WGK, weight

H B [mm]
H 97 147 197 297 397 497 597 697 797 897 997 1097 1197 1297 1397 1497 1597 1697 1797 1897 1997
mm kg

97

1

1

1

1

1

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

3

147

1

1

1

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

4

4

4

197

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

4

4

4

4

4

5

247

1

1

1

1

2

2

2

2

3

3

3

3

4

4

4

4

5

5

5

5

6

297

1

1

1

2

2

2

3

3

3

3

4

4

4

5

5

5

6

6

6

6

7

347

1

1

1

2

2

3

3

3

4

4

4

5

5

5

6

6

6

7

7

7

8

397

1

1

2

2

2

3

3

4

4

4

5

5

6

6

6

7

7

8

8

8

9

447

1

1

2

2

3

3

4

4

4

5

5

6

6

7

7

8

8

9

9

9

10

497

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

597

1

2

2

3

3

4

5

5

6

6

7

8

8

9

9

10

11

11

12

12

13

797

1

2

3

4

4

5

6

7

8

8

9

10

11

12

12

13

14

15

16

16

17

997

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

1197

2

3

4

5

6

8

9

10

11

12

14

15

16

17

18

20

21

22


1397

2

3

5

6

7

9

10

12

13

14

16

17

19

20

21

23




1597

2

4

5

7

8

10

12

13

15

16

18

20

21

23






1797

2

4

6

8

9

11

13

15

17

18

20

22








1997

2

4

6

8

10

12

14

16

18

20

22










Border fixing holes – WGK 00145911_0


WGK, standard sizes, width, dimensions

Width No. of holes
B n T₁ T₂
mm mm

97

1

–

B ∕ 2

147

1

–

B ∕ 2

197

1

–

B ∕ 2

297

2

262

17.5

397

2

362

17.5

497

3

231

17.5

597

3

281

17.5

797

3

381

17.5

997

4

321

17.5

1197

4

387

17.5

1397

5

341

17.5

1597

5

391

17.5

1797

6

352

17.5

1997

6

392

17.5


WGK, standard sizes. Height, dimensions

Height No. of holes
H n T₃ T₄
mm mm

97

0

–

–

147

0

–

–

197

0

–

–

297

0

–

–

397

0

–

–

497

0

–

–

597

3

281

17.5

797

3

381

17.5

997

4

321

17.5

1197

4

387

17.5

1397

5

341

17.5

1597

5

391

17.5

1797

6

352

17.5

1997

6

392

17.5


WGK, intermediate sizes, width, dimensions

Width No. of holes
B n T₁ T₂
mm mm

97 – 296

1

–

B ∕ 2

298 – 396

2

B − 35

17.5

398 – 796

3

(B − 35) ∕ 2

17.5

798 – 1396

4

(B − 35) ∕ 3

17.5

1398 – 1796

5

(B − 35) ∕ 4

17.5

1798 – 1996

6

(B − 35) ∕ 5

17.5


WGK, intermediate sizes, height, dimensions

Height No. of holes
H n T₃ T₄
mm mm

122 – 572

0

–

–

622 – 772

3

(H − 35) ∕ 2

17.5

822 – 1372

4

(H − 35) ∕ 3

17.5

1422 – 1772

5

(H − 35) ∕ 4

17.5

1822 – 1972

6

(H − 35) ∕ 5

17.5


Installation details, Basic information and nomenclature

  • Installation details
  • Basic information and nomenclature
Wall installation without installation subframe 00102092_0..


Installation and commissioning

  • Installation with or without installation subframe

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

Downloads

product information

  • Print page Type WGK

  • Product data sheet Type WGK

    Product data sheet 1,3 MB pdf

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Thank you for your message!

Visual contact Visual contact

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +971 4 3417448 | Fax: +971 4 3417449