Louvre windows

Louvre windows are used as a natural ventilation system in facades. The louvre system offers in addition to its flexible dimensions many advantages for modern buildings, which require a good aerodynamic, great acoustic features and good insulation. Due to the thermal separation of frame and wing profiles plus the installation of insulating glass with infills of up to 32 mm total thickness and U-values up to 1.1 W/m2k (dependent upon configuration), brilliant thermal insulation values are given.

Operated by hand lever, connecting rod, pneumatic cylinder or actuator (24 V or 230 V) it is possible to install the louvre window at any place, wherever aeration and ventilation are most effective. When fitted with pneumatic drive or actuator the windows can be controlled via a central control and automatically shut in bad weather by means of a wind and rain sensor. As louvre windows do not offer a passage they can also be used for cooling the building during nightly hours.

Certified as a natural smoke and heat extractor according to DIN EN 12101-02 the windows are not only used for ventilation. They are fully integrated into the fire protection concept and serve as supply air surfaces or as a smoke and heat extractor. This makes sense in staircases or on the lower levels of multi-storey buildings. The louvre windows are tested by the material testing authorities of North Rhine-Westphalia and carry the following classifications:

  • classified for functionality as RE 1000 with double function type B
  • classified for wind load as WL 3000
  • classified for heat resistance as B 3004
  • fire material classification E

EAL Louvre Windows

The uniqueness of the louvre window EAL is found in its slats that open completely outwards
and are fitted with a self-retained locking mechanism. Optically, the construction impresses by
its flush-mounted all-glass appearance. Frame and blades are made of thermally separated
aluminium profiles with a frame construction depth of 171 mm and a frame face width of 60
mm at the inside. The visible width of the vertical blades is 65 mm. For the assembly, an adapter
profile is already mounted at the element. Available sizes on request.

Louvre blades:
Slats are also made of thermally separated, extruded aluminium profiles. 2- or 3-fold insulating
glazing of your choice is available up to a total thickness of 38 to 46 mm.

Sealings:
Two sealing levels designed for longevity with special TPE/PP structure.

Technical specification tested as per DIN EN 12101-2:2003:
• Aerodynamic: Cv = 0,53- 0,58 (opening angle 80°)*
• Structural stability under wind load WL 2500
Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207: Classification 9A
• Joint permeability according to DIN EN 12208: Classification 4
* subject to model and size.

Possible sizes by request.

Link to EAL cross section

TGL ISO SLP BT 50 / 60

The classy metal look of this highly insulating louvre window system results from its flush-fitting structural shape. Window frame and slats are made of thermally separated aluminium profiles with a frame construction depth of 50 or 60 mm and a frame face width of 38 mm. The TGL ISO SLP is approved as a natural smoke and heat extraction system according to DIN EN 12101-2:2003.

Louvre blades:
Slats are made of thermally separated extruded aluminium profiles with heights of 174, 192,
200, 211, 275 or 344 mm (frame excluded).
Total thickness of slats: BT50 – 38 mm, BT60 – 48 mm.

Sealings:
Lateral with sealing brushes, horizontal profile joints with sealing brushes and EPDM gasket.

Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,54 – 0,60 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,48 – 0,52 (opening angle 64°)*
• Structural stability under wind load WL 3000
• Function at low temperatures: T-20*
* subject to model and size.

Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207:
BT50 – classification 7A
BT60 – classification 7A
• Joint permeability according to DIN EN 12208:
BT50 – classification 4
BT60 – classification 4
• Wind resistance according to DIN EN 12210:
BT50 – classification C5
BT60 – classification C5
Further technical specification:
• Pendulum impact test with 900 Joule (fall proof)

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width = 1800 mm (broader elements are available divided by glazing bars)

Link to TGL ISO SLP 38 BT50 cross section
Link to TGL ISO SLP 48 BT60 cross section

STG ISO 36 BT 50

With its high-quality all-glass look this louvre window is designed for flush installation in glass façades. Window and slat frames are made of thermally separated aluminium profiles with a frame construction depts of 50 or 60 mm and a frame face width of 38 mm. The visible width of the vertical slat profiles is 33 mm on the inside, the horizontal slat joint is 66 mm on the inside. The STG ISO is approved as a natural smoke and heat extraction system according to DIN EN
12101-2:2003.

Louvre blades:
Choice of various insulating glazing options up to a 3-fold insulation glazing with u-values of up to 0.5 W/m²K
Variable slat height: 120 – 400 mm
Total thickness of slats: 42 mm (with a 6 mm thick outer pane)

Sealings:
Lateral with sealing brushes, horizontal profile joints with sealing brushes and EPDM gasket.

Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,53 – 0,58 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,47 – 0,51 (opening angle 64°)*
• Structural stability under wind load WL 2500
• Function at low temperatures: T-20*
* subject to model and size.

Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207:
BT50 – classification 4A
BT60 – classification 7A
• Joint permeability according to DIN EN 12208:
BT50 – classification 3
BT60 – classification 4
• Wind resistance according to DIN EN 12210:
BT50 – classification C2
BT60 – classification C5
Further technical specification:
• BT50 – Airborne sound insulation according to DIN EN ISO 717-1: 41 dB*
• Ball impact resistance according to DIN 18032-3: existing
• Burglar resistance according to DIN EN 1627: BT60 – RC2
• Pendulum impact test with 900 Joule (fall proof)

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width = 2000 mm (broader elements are available divided by glazing bars)

Link to STG ISO 36 BT50 cross section
Link to STG ISO 46 BT60 cross section

TGL ISO 24 BT 50 / 32 BT 60 / 60UM

The TGL ISO is the thermally separated version of the NTL. Window and slat frames are made of thermally separated aluminium profiles with a frame construction depth of 50, 60 or 70 mm. The TGL ISO is approved as a natural smoke and heat extracting system according to DIN EN 12101-2:2003.

Louvre blades:
Choice of panel or insulating glazing up to 3-fold insulating glazing.
Total thickness of slats: BT50 – 24 mm, BT60 – 32 mm, BT70 – 44 mm.
BT50 variable slat height: 120 – 400 mm
BT60 / BT70 variable slat height: 200 – 400 mm

Sealings:
Lateral with sealing brushes, horizontal profile joints with sealing brushes and EPDM gasket.
Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,56 – 0,61 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,50 – 0,56 (opening angle 64°)*
• Structural stability under wind load WL 3000
• Function at low temperatures: T-20*
Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207:
BT50 – classification 6A
BT60 – classification 7A with additional sealing
• Joint permeability according to DIN EN 12208:
BT50 – classification 3
BT60 – classification 4 with additional sealing
• Wind resistance according to DIN EN 12210:
BT50 – classification C2
BT60 – classification C5 with additional sealing
Further technical specification:
• Airborne sound insulation according to DIN EN ISO 717-1:
BT50 – 38 dB*
BT60 – 39 dB*
• Burglar resistance according to DIN EN 1627: BT60 – RC2 / BT70 – RC3
• Ball impact resistance according to DIN 18032-3: existing for the BT60
• Pendulum impact test with 900 Joule (fall proof)
* subject to model and size. Technical values for TGL ISO 44 BT70 on request.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width = 2000 mm (broader elements are available divided by glazing bars)
Maximum frame width can be extended to 2500 mm with tandem control or double-acting drive.

Link to TGL ISO 24 BT50 cross section
Link to TGL ISO 32 BT60 cross section

TGL ISO 44 BT 70 HI

The TGL ISO is the thermally separated version of the NTL. Window and slat frames are made of thermally separated aluminium profiles with a frame construction depth of 50, 60 or 70 mm. The TGL ISO is approved as a natural smoke and heat extracting system according to DIN EN 12101-2:2003.

Louvre blades:
Choice of panel or insulating glazing up to 3-fold insulating glazing.
Total thickness of slats: BT50 – 24 mm, BT60 – 32 mm, BT70 – 44 mm.
BT50 variable slat height: 120 – 400 mm
BT60 / BT70 variable slat height: 200 – 400 mm

Sealings:
Lateral with sealing brushes, horizontal profile joints with sealing brushes and EPDM gasket.
Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,56 – 0,61 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,50 – 0,56 (opening angle 64°)*
• Structural stability under wind load WL 3000
• Function at low temperatures: T-20*
Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207:
BT50 – classification 6A
BT60 – classification 7A with additional sealing
• Joint permeability according to DIN EN 12208:
BT50 – classification 3
BT60 – classification 4 with additional sealing
• Wind resistance according to DIN EN 12210:
BT50 – classification C2
BT60 – classification C5 with additional sealing
Further technical specification:
• Airborne sound insulation according to DIN EN ISO 717-1:
BT50 – 38 dB*
BT60 – 39 dB*
• Burglar resistance according to DIN EN 1627: BT60 – RC2 / BT70 – RC3
• Ball impact resistance according to DIN 18032-3: existing for the BT60
• Pendulum impact test with 900 Joule (fall proof)
* subject to model and size. Technical values for TGL ISO 44 BT70 on request.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width = 2000 mm (broader elements are available divided by glazing bars)
Maximum frame width can be extended to 2500 mm with tandem control or double-acting drive.

Link to TGL ISO 24 BT50 cross section
Link to TGL ISO 32 BT60 cross section

GG ISO 24 BT 50 / 32 BT 60

This system combines the benefits of thermally insulated systems and an appealing all-glass look. Window and slat frames are made of thermally separated aluminium profiles with a frame construction depth of 50 or 60 mm and a frame face width of 38 mm. The system has only a vertical frame section with a visible width of 33 mm without a horizontal blade profile. The GG ISO is approved as a natural smoke and heat extraction system according to DIN EN
12101-2:2003.

Louvre blades:
The insulated glazing of your choice is fitted into a lateral border profile.
Total thickness of slats: BT50 – 24 mm, BT60 – 32 mm
Slat height BT50 variable: 120 – 300 mm
Slat height BT60 variable: 200 – 350 mm

Sealings:
Lateral with sealing brushes, horizontal profile joints with sealing brushes and EPDM gas.
Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,54 – 0,61 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,49 – 0,55 (opening angle 64°)*
• Structural stability under wind load WL 3000
• Function at low temperatures: T-20*
* subject to model and size.

Technical specification tested as per DIN EN 14351-1:2006+A1:2010:
• Driving rain tightness according to DIN EN 12207:
BT60 – classification 4A
Joint permeability according to DIN EN 12208:
BT60 – classification 4
Wind resistance according to DIN EN 12210:
BT60 – classification C2
Further technical specification:
• Pendulum impact test with 900 Joule (fall proof)
Further technical data on page 2.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width BT50 = 1400 mm (NSHEV 1000 mm)
Maximum frame width BT60 = 1500 mm (broader elements are available divided by glazing bars)

Link to GG ISO 24 BT50 cross section
Link to GG ISO 32 BT60 cross section

GG OVERLAPPING BT50 / BT60

The difference to GG Step-cascaded glass is that GG Overlapping slats have no steps in horizontal direction for a flush-mounted look, but imbricate when closed. The GG Overlapping frame also consists of extruded aluminium profiles with a frame construction depth of 50 or 60 mm and a frame face width of 38 mm. The GG Schuppe is approved as a natural smoke and heat extraction system according to DIN EN 12101-2:2003.

Louvre blades:
Slats consist of point-fixed all-glass single glazing panes made of ESG glass with circumferentially polished glass edges.
Glass thicknesses: BT50 – 6, 8 or 10 mm, BT60 – 12 mm
Variable slat height BT50: 120 – 300 mm
Variable slat height BT60: 200 – 300 mm

Sealings:
Lateral with felt seal and sealing brushes, frame gasket made of silicon.
Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,52 – 0,59 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,48 – 0,54 (opening angle 64°)*
• Structural stability under wind load WL 1500
* subject to model and size.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width BT50 = 1500 mm (1400 NSHEV)
Maximum frame width BT60 = 1800 mm
(broader elements are available divided by glazing bars)

Link to GG Overlapping BT50 cross section
Link to GG Overlapping BT60 cross section

GG STEP-CASCADED GLASS BT 50 / BT60

As an all-glass system the GG Step-cascaded glass also impresses by its flush-mounted appearance, which is achieved by overlapping horizontal glass edges that are designed in steps. Like the GG SK30, the frame construction is made of extruded aluminium profiles with a frame construction depth of 50 or 60 mm and a frame face width of 38 mm. The GG Stufe is
approved as a natural smoke and heat extraction system according to DIN EN 12101-2:2003.

Louvre blades:
Slats are made of a point-supported 2-fold VSG glazing (laminated safety glass) (TVG (partly
toughened glass) or ESG (single safety glass) panes) with circumferentially polished glass edges.
Glass slats come standard with axle bearings.
Glass thicknesses: BT50 – 8 mm, BT60 – 12 mm
Variable slat height: 120 – 300 mm

Sealings:
Lateral with felt seal and sealing brushes, frame gasket made of silicon.
Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,52 – 0,59 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,48 – 0,54 (opening angle 64°)*
• Structural stability under wind load WL 1500
* subject to model and size.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width BT50 = 1500 mm (1400 NRWG)
Maximum frame width BT60 = 1800 mm
(broader elements are available divided by glazing bars)

Link to GG Step-cascaded glass BT50 cross section
Link to GG Step-cascaded glass BT60 cross section

GG BEVELLED EDGE BT50 / BT60

In addition to its high standards of transparency provided by pivoted frameless glass slats, the allglass system offers a flush-mounted look. The frame construction is made of extruded aluminium profiles with a frame construction depth of 50 or 60 mm and a frame face width of 38 mm. The GG Bevelled Edge is approved as a natural smoke and heat extraction system according to DIN EN 12101-2:2003.

Louvre blades:
Slats consist of pivoted all-glass single glazing panes made of ESG glass with circumferentially
polished glass edges. The horizontal glass edges have 30° mitres
Glass thicknesses: BT50 – 6, 8 or 10 mm, BT60 – 12 mm
Variable slat height: 120 – 300 mm

Sealings:
Lateral with felt seal and sealing brushes, frame gasket made of silicon.

Technical specification tested as per DIN EN 12101-2:2003:
• BT50 – Aerodynamic: Cv = 0,52 – 0,59 (opening angle 78°)*
• BT60 – Aerodynamic: Cv = 0,48 – 0,54 (opening angle 64°)*
• Structural stability under wind load WL 1500
* subject to model and size.

Possible sizes:
Minimum frame width = 300 mm
Maximum frame width BT50 = 1500 mm (1400 NSHEV)
Maximum frame width BT60 = 1800 mm
(broader elements are available divided by glazing bars)

Link to GG Bevelled Edge BT50 cross section
Link to GG Bevelled Edge BT60 cross section

GG / BH

Due its highly versatile design and glass structure, this special design is particularly suited for use in double-skin façades. Point-fixed vertically arranged glass louvre blades are mounted using pivoting or fixed stainless steel consoles attached to an existing substructure on the building. The technical implementation is carried out to customer requirements. Stainless steel fittings are used. The louvres are opened by an electric servomotor with IP65 protection class (24 V DC or 230 V AC). The stainless steel is either electropolished or bead blasted. The louvre window is mounted using a special adapter on steel struts.

Louvre blades:

The louvre blades are either made of laminated safety glass consisting of twin-pane heat-soaked tempered safety glass or twin-pane partially pre-stressed safety glass depending on the loading, or of single-pane heat-soaked tempered safety glass.

S 200

The S 200 is an economical solution for industrial use as a supply air system, which is also designed to serve as a shading or privacy screening system. The frame is made of extruded aluminium profiles with a frame construction depth of 50 mm and a frame face width of 38 mm. The S200 is approved as a smoke and heat extraction system according to DIN EN 12101-2:2003.

Louvre blades:
Slats are made of extruded aluminium profiles with a height of 200 mm. The S-shaped slat profile allows a variant centre distance of 120 to 180 mm. Thus, the frame height can be adjusted to requirements.

Technical specification tested as per DIN EN 12101-2:2003:
• Aerodynamic: Cv = 0.55 – 0.57 (opening angle 78°)*
• Structural stability under wind load WL 3000
* subject to model and size.

Possible Sizes:
Minimum frame width = 300 mm
Maximum frame width = 1800 mm
(broader elements are available divided by glazing bars)

Link to S200 cross section

Louvre blades:

The louvre blades are either made of laminated safety glass consisting of twin-pane heat-soaked tempered safety glass or twin-pane partially pre-stressed safety glass depending on the loading, or of single-pane heat-soaked tempered safety glass.