LF550 GLASS LOUVRE SYSTEM
LF550 large-format frameless glass louvres for transparent facades.
LF550 uses substantial single-glazed glass blades with no horizontal aluminium blade frame across the external face, creating long uninterrupted glass lines and a clean architectural expression.
Each blade is supported at its ends through discreet stainless-steel patch fittings and an end-pivoting operating arrangement. EBSA coordinates the louvre geometry, glass, facade interfaces, automation and controls around the project from early selection through installation and commissioning.
Large glass blades. Minimal visible hardware. Commercial facade engineering.
LARGE FORMAT
Substantial single-glazed blades create a strong architectural rhythm with reduced visual subdivision
FRAMELESS EXTERNAL EXPRESSION
No horizontal aluminium blade frame across the external face, allowing the glass to dominate the elevation
END-PIVOT ARCHITECTURE
Blade support, pivot and movement are resolved at the blade ends and coordinated through the vertical framing zone
ENGINEERED INTERNAL ACCESS
Snap-out framing on the inside face provides designed access to concealed operating components while preserving the external glass expression
SYSTEM SELECTION
Choose LF550 when large blade scale and a frameless single-glazed expression lead the facade brief.
LF550 occupies a distinct position in the EBSA glass louvre range. It combines substantial glass blade scale with an end-supported, end-pivoting architecture and a clean external face free of horizontal aluminium blade frames.
LF550
LF550
Large-format single-glazed frameless architecture with end-supported, end-pivoting glass blades and concealed operating components.
MP2
Large-format insulated-glass louvre architecture with thermally broken framing and end-supported, end-pivoting operation.
BT90
Thermally broken insulated-glass centre-pivot architecture with a repeating framed blade expression and concealed rack-and-gear operation.
G SERIES
Frameless single-glazed centre-pivot architecture available as overlapping glass-on-glass or flush stepped-laminate blade configurations, with concealed rack-and-gear operation.
Start with the required facade architecture. Use the product family that best fits it.
LARGE-FORMAT FRAMELESS ARCHITECTURE
Support the glass at its ends and let the facade read as glass.
LF550 avoids horizontal aluminium blade frames across the external face. Large single-glazed blades are carried at their ends through stainless-steel patch fittings, with blade support, pivot hardware and the operating system coordinated through the vertical framing or mullion zone.
GLASS BLADE
STAINLESS-STEEL PATCH FITTINGS / END PIVOTS
VERTICAL LF550 FRAME / MULLION
PERIMETER FIXING
BUILDING STRUCTURE
FRAMELESS BLADE EXPRESSION
The glass remains the dominant external element. Avoiding horizontal aluminium blade frames preserves long uninterrupted sightlines and gives the louvre a distinctly architectural character.
END-SUPPORTED, END-PIVOTING OPERATION
Each blade is supported and rotates at its ends, concentrating support, pivot and movement within the vertical framing zone rather than across the visible face of the blade.
VERTICAL FRAME + MULLION LOAD PATH
Blade loads transfer through the end supports and pivot hardware into the vertical LF550 frame or intermediate mullion, then through the perimeter fixing into the surrounding facade and building structure.
CONCEALED OPERATING COMPONENTS
The operating arrangement is integrated around the vertical framing zone so the primary external sightline remains glass rather than exposed louvre hardware.
INTERNAL SNAP-OUT ACCESS
Snap-out framing on the inside face provides designed access to internal operating components for inspection, adjustment and future service without disturbing the external architectural expression.
The defining LF550 idea is the complete assembly: large glass blade, discreet end supports, vertical load path, concealed operation and designed-in internal access working as one facade system.
DESIGN INPUTS
Coordinate the glass, blade proportion and surrounding facade early.
Large-format single-glazed louvres bring several facade decisions together. Overall louvre size, blade span, blade height, glass makeup, intermediate support, perimeter framing and operating geometry all influence how the completed LF550 assembly performs and how it integrates visually with the building.
SINGLE-GLAZED SYSTEM
LF550 is the major single-glazed large-format pathway in the EBSA range. Project glass makeup is coordinated with the structural, safety, visual and coating requirements of the facade.
BLADE SCALE + PROPORTION
Large blades reduce visual subdivision and create a strong architectural rhythm, with glass weight, support and operating forces resolved as part of the system design.
OVERALL LOUVRE GEOMETRY
Width, height and aspect ratio matter. Tall and wide louvre fields can place different demands on the same system architecture and should be considered with the supporting facade from the outset.
INTERMEDIATE SUPPORT
Wider louvre fields can incorporate intermediate structural or mullion support where required, allowing the overall facade zone to be developed without losing the intended architectural rhythm.
PERIMETER INTERFACE
Coordinate the LF550 frame with curtain wall, structural steel, masonry or other surrounding construction, together with waterproofing, drainage, fixings, tolerances and adjacent facade components.
Geometry is a core part of the engineering evidence and product selection.
DESIGNED FOR THE BUILDING LIFECYCLE
Keep the architectural face clean while retaining access from inside.
LF550 integrates the operating system within the framing zone rather than placing conventional louvre hardware across the visible face. This protects the architectural expression and gives the project team a cleaner way to coordinate operation, access and long-term ownership.
OUTSIDE FACE
GLASS EXPRESSION
INSIDE FACE
SNAP-OUT ACCESS → CONCEALED OPERATING ZONE
CLEAN EXTERNAL FACE
The external facade reads primarily as glass, with the blade support and operating system kept visually subordinate to the architecture.
PROTECTED OPERATING ZONE
Operating components are coordinated within the framing zone rather than exposed as a collection of visible moving parts across the louvre face.
DESIGNED-IN INTERNAL ACCESS
Snap-out framing on the inside face provides direct access to internal components when required, allowing the access strategy to be resolved as part of the product architecture rather than added after installation.
Access is built into the louvre architecture without compromising the external glass expression.
FULL-SIZE PERFORMANCE
Current full-size testing supports LF550 at commercial facade scale.
EBSA’s current LF550 test programme was carried out by ift Rosenheim in Germany for Australian requirements, using AS/NZS 4420.1:2016 and the performance requirements of AS 2047:2014+A2:2017.
The current evidence includes tall and wide full-size LF550 assemblies, providing architects and facade engineers with direct performance data across two important large-format geometry territories.
TESTED SIZE — TALL
1500 × 3750 mm
Full-size LF550 tall configuration.
TESTED SIZE — WIDE
2800 × 2800 mm
Full-size LF550 wide configuration.
WATER RESISTANCE
No water penetration at test pressures up to 1500 Pa across the current Australian programme used for this page.
AIR INFILTRATION
0.04–0.06 L/s·m² at ±75 Pa across the current Australian configurations used for this page.
SERVICEABILITY
Deflection remained within l/250 at test pressures up to ±2700 Pa across the current Australian programme used for this page.
ULTIMATE STRENGTH
Ultimate testing reached up to +10,000 Pa and -6,000 Pa across the current Australian programme used for this page.
The current programme gives LF550 a strong Australian-standard evidence base for large-format single-glazed operable facade applications.
PROJECT APPLICATION
Use the tested performance as a strong foundation for project design.
LF550 is a repeating facade system. EBSA uses the current test programme together with project geometry, glass makeup, blade span, design pressure and support strategy to develop the final louvre arrangement.
Large louvre fields can be developed from repeating LF550 elements, with intermediate mullions or structural support used where required to create wider facade zones while maintaining the intended transparency and architectural rhythm.
01 — BLADE SPAN + GLASS
Coordinate blade span and glass makeup with the required wind pressure, safety, visual and facade requirements.
02 — HEIGHT + FIELD WIDTH
Develop tall single fields or wider repeating fields to suit the facade geometry and architectural intent.
03 — MULLION STRATEGY
Use intermediate support where required to create wider louvre fields and carry blade and support loads into the surrounding facade.
04 — PERFORMANCE DESIGN
Use the current air, water, serviceability and ultimate results as the engineering baseline for project selection.
05 — EBSA ENGINEERING
Coordinate louvre geometry, glass, support arrangement and facade interfaces with the project’s performance requirements.
Full-size testing and project-specific facade engineering work together to give project teams confidence in the final LF550 solution.
AUTOMATED LF550 LOUVRES
Design the louvre and its operating system together.
LF550 can form part of natural ventilation, smoke control or a wider building operating strategy. EBSA coordinates the louvre mechanism, actuation, field wiring, controls, sensors and building interfaces as one operating facade system from the outset.
LF550 LOUVRE
OPERATING MECHANISM + DRIVE
FIELD WIRING
CONTROL SYSTEM
LOGIC + SENSORS
BMS / MECHANICAL / FIRE INTERFACES
COMMISSIONING
SERVICE
NATURAL VENTILATION
Coordinate blade position and opening strategy with user control, environmental inputs, weather response and the building’s natural-ventilation sequence.
SMOKE CONTROL
Where LF550 forms part of a smoke-control or relief-air strategy, coordinate the required emergency operating sequence and fire-system interfaces with the louvre and control architecture.
BMS + MECHANICAL
Define commands, status, overrides and interlocks around the building’s required operating sequence.
LIFECYCLE ACCESS
Coordinate cleaning, safe access, adjustment and future service around the inside-face snap-out framing and the completed facade condition.
The louvre, mechanism, controls and building interfaces should resolve as one operating facade system.
FROM PRODUCT TO FACADE
Carry the LF550 architecture through detailing, installation and commissioning.
EBSA carries the selected LF550 configuration into the surrounding facade and construction detail, coordinating louvre geometry, glass, support, waterproofing, automation and construction sequence so the finished system can be installed, adjusted, commissioned and supported as intended.
FACADE DETAILING
Resolve perimeter profiles, adjacent curtain wall, structural steel, masonry or cladding, together with seals, drainage paths, support and construction tolerances around the actual project condition.
GLASS COORDINATION
Coordinate glass makeup, coatings, appearance, edge conditions and procurement with the wider facade glazing strategy.
SHOP DRAWINGS
Develop project-specific drawings that communicate the louvre arrangement, facade interfaces and relevant automation requirements to the project team.
INSTALLATION + ADJUSTMENT
Plan access, sequence, glazing, adjustment and final operating checks around the finished facade and actual site conditions.
COMMISSIONING + SERVICE
Where automated, verify the completed LF550 system through the required controls, interfaces and operating sequence, while retaining the designed inside-face access pathway for the building lifecycle.
A large-format louvre is successful when the architectural detail and operating system remain coordinated through delivery.
LF550 IN BUILT FACADES
Large-format frameless louvres integrated into commercial architecture.
FEATURED PROJECT
FIRST BUILDING — BRADFIELD CITY CENTRE
LF550 integrated into a coordinated operable facade system.
LF550 frameless glass louvres at First Building, Bradfield City Centre demonstrate the large-format single-glazed pathway in built form and the relationship between glass blade scale, facade integration, actuation and controls.
SECONDARY PROJECT
MIDTOWN CENTRE — BRISBANE
Automated LF550 louvres within a completed city facade.
Midtown Centre provides a second built reference for LF550, showing the frameless single-glazed system integrated into a completed commercial facade and coordinated with the building’s operating strategy.
SPECIFIER INFORMATION
Move from LF550 selection into project specification.
Once LF550 is identified as the likely louvre architecture, the next step is to compare the project geometry and performance brief with controlled product information, current testing, drawings and the required automation strategy.
CURRENT TEST INFORMATION
Use current LF550 test evidence and configuration-specific performance information relevant to the proposed application.
PRODUCT TECHNICAL INFORMATION
Use current approved LF550 system, glass, framing, operation and project-design information rather than superseded legacy brochures or headline values.
CAD + DRAWINGS
Use controlled details and project drawings to coordinate LF550 with the surrounding facade and support conditions.
AUTOMATION + CONTROLS
Coordinate drive operation, field wiring, control architecture, sensors and building-system interfaces where the louvres are automated.
PROJECT REFERENCES
Use relevant completed LF550 projects to understand how the system has been developed within different facade conditions.
LF550 PROJECT DELIVERY
From facade requirement to operating louvre system.
EBSA carries the LF550 intent through the stages that determine successful delivery and operation in the finished building — from system selection and facade detailing through supply, installation, automation and commissioning.
01 — DESIGN CONSULTATION
02 — SYSTEM SELECTION
03 — PROJECT GEOMETRY + GLASS
04 — FACADE DETAILING
05 — SHOP DRAWINGS
06 — AUTOMATION + CONTROL COORDINATION
07 — SUPPLY
08 — INSTALLATION + GLAZING
09 — COMMISSIONING
10 — SERVICE + SUPPORT
Keep the product selection, facade detail and operating strategy connected through the project.
LF550 PROJECT APPLICATION
Bring the facade geometry and performance brief to EBSA early.
If the project team can provide the proposed louvre size, glass strategy, facade detail, design pressures and operating intent, EBSA can compare the application with the current LF550 architecture and test evidence and develop the next level of project coordination.