WG

EXTERNAL WEATHER LOUVRES FOR THE PROTECTION OF VENTILATION AND AIR CONDITIONING SYSTEMS

External weather louvres to protect ventilation and air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings. In combination with insect screens, they also provide protection against insects. They are used for a wide variety of applications with regard to air flow and can also cover large installation openings. For single grilles, the following applies:

Maximum width of 2400 mm, maximum height of 2310 mm, maximum area of 4 m² (aluminium variant also as continuous horizontal runs)
Low differential pressure due to aerofoil blades
Low air-regenerated noise due to a rounded drip edge
Simple and quick installation due to perimeter border
Variants made of galvanised sheet steel, aluminium or stainless steel
Large-area arrangement of several single grilles in combination with support structure provided by others possible to cover very large installation openings

Optional equipment and accessories

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

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General Information

Application

External weather louvres for fresh air and exhaust air openings of ventilation and 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 features

Large areas possible 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
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)
Height subdivided max. = 4720 mm (intermediate sizes 2311 – 4719 mm in increments of 1 mm)
Any combination of B × H
Undivided construction up to max. 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

- Crimped 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 crimped wire mesh, stainless steel (only WG-AL, WG-B-AL)
- 3: With insect screen and crimped wire mesh, stainless steel (only WG-A2, WG-AL, WG-B-AL)

Front border

- With holes
- U: without holes

Parts and characteristics

Front border
Regular blades and bottom blade
Crimped wire mesh
Insect screen (optional)
Visible mullion or stabilising mullion at the rear, from B = 1385 mm

Accessories

Installation subframes for the fast and simple installation of external weather louvres

Construction features

Crimped 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
Crimped 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

Description

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

Parts and characteristics

Front border
Regular blades and bottom blade
Crimped wire mesh
Insect screen (optional)
Visible mullion or stabilising mullion at the rear, from B = 1385 mm

Accessories

Installation subframes for the fast and simple installation of external weather louvres

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)
Height subdivided max. = 4720 mm (intermediate sizes 2311 – 4719 mm in increments of 1 mm)
Any combination of B × H
Undivided construction up to max. 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)