The Lucerne.78 series by DERCHI delivers custom louvered bifold doors engineered for large openings that connect indoor and outdoor spaces. Built with thermal break aluminum profiles and a dedicated KERSSENBERG hardware system, this folding door balances climate insulation with expansive foldable storage.
- 14.8mm thermal break insulation strip for energy-efficient performance
- Lower load-bearing, upper guiding sliding structure for stable operation
- C1–C9 custom opening configurations for diverse project layouts
- Optional 27A electric louver upgrade for smart ventilation control
Product Details
The Lucerne.78 custom louvered bifold doors employ a lower load-bearing and upper guiding sliding structure, where bottom rollers carry panel weight while the upper positioning wheel maintains track alignment. A 14.8mm thermal break strip separates interior and exterior aluminum profiles, reducing heat transfer. Hidden hinges with built-in adjustment address door sagging after installation, allowing correction without removing panels while keeping a clean appearance when closed.
A strengthened center pillar between panels distributes wind pressure more evenly, improving structural stability under load. Two track options serve different conditions: a high track for superior sealing and drainage, and a water-blocking low track for barrier-free passage suited to balconies and courtyards. With C1–C9 opening configurations ranging from single-side folding to multi-panel combinations, this bifold adapts to layouts that ordinary folding doors cannot accommodate.
Product Features
14.8mm Thermal Break Insulation: The wide insulation strip reduces heat transfer between interior and exterior profiles, supporting energy-efficient climate control in residential and commercial projects.
Lower Load-Bearing Sliding Structure: Bottom rollers carry panel weight while the upper wheel guides movement, delivering stable and smooth operation even at maximum panel heights.
Hidden Hinge with Built-In Adjustment: Concealed hinges maintain clean panel aesthetics when closed, and the adjustment function corrects door sagging without requiring panel removal.
Strengthened Center Pillar: The reinforced pillar between panels improves wind pressure resistance and distributes structural force evenly across the folding door system.
KERSSENBERG Hardware System: Dedicated hardware from a single brand ensures consistent quality, compatibility, and long-term operational reliability across all moving components.
C1–C9 Custom Opening Configurations: Nine configuration options cover single-side folding, double-side folding, and multi-panel combinations to match diverse project layout requirements.
Customizable Styles
Glass and Louver: Standard 5+27A+5 double tempered insulating glass, upgradeable to 27A electric louver for smart ventilation control in custom louvered bifold doors.
Track System: Choose high track for superior sealing and drainage, or water-blocking low track for barrier-free passage across balcony and courtyard projects.
Panel Size: Custom width from 500mm to 800mm and height from 1000mm to 2800mm to match specific project opening requirements.
Color Finish: Powder coating in Sand grey, Dark coffee, Light coffee, or White; plus seven stock colors including Black walnut and Starry sky black.
Opening Configuration: C1–C9 configurations covering single-side folding, double-side folding, and multi-panel bifold combinations for any architectural layout.
Hardware Accessories
KERSSENBERG Hidden Hinge: Concealed hinge with built-in adjustment function prevents door sagging and maintains clean panel aesthetics when the folding door is closed.
KERSSENBERG Aluminum Handle: Ergonomic aluminum handle providing comfortable grip and durable operation for daily use of bifold door panels.
Lower Load-Bearing Roller: Available in 3+1 and 2+2 configurations for smooth, stable sliding performance under panel weight.
Upper Positioning Wheel: Guides panel movement along the track system, ensuring stable and aligned operation during opening and closing cycles.
Automatic Locking with Key Cylinder: Door panels lock automatically when closed, with a key lock cylinder providing secure access control.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | Class 6 | Verify correct unit and value from official test report before project submission |
Wind Pressure Resistance | Class 8 / 4.5KPa | Confirm test report and certifying body for project compliance documentation |
Water Tightness | Class 4 / 350Pa | Confirm test report and certifying body for project compliance documentation |
Air Tightness | Class 7 / 1.8m³/(m·h) | Confirm test report and certifying body for project compliance documentation |
Sound Insulation | Class 3 / 30dB | Confirm test report and certifying body for project compliance documentation |
Product Specifications
Parameter | Specification |
|---|---|
Product Name | Lucerne.78 Custom Louvered Bifold Doors |
Product Type | Thermal break aluminum folding door |
Material | Thermal break aluminum profile |
Glass Type | 5+27A+5 double tempered insulating glass |
Insulation Strip Width | 14.8mm |
Frame Width | 77.3mm |
Grid Specification | 25×25 |
Hollow Aluminum Strip | Black PVDF fluorocarbon with DERCHI logo |
Single Panel Width | 500–800mm |
Single Panel Height | 1000–2800mm |
Hardware Brand | KERSSENBERG |
Assembly Forms | 4+0 (low track), 2+2 (high track) |
Opening Configurations | C1–C9 custom configurations |
Trim Options | New 47, New 70, New 75, European 80, New 100, European 110 |
Top Fixed Glass | Not available |
Notes | Profile wall thickness and thermal insulation unit require verification against latest production standard and official test report |
Advantages
Large Foldable Opening: Custom louvered bifold doors maximize indoor-outdoor connection for balconies, terraces, and courtyard spaces with full foldable panel storage.
Thermal Break Insulation: The 14.8mm insulation strip provides thermal separation for energy-conscious residential and commercial projects requiring climate control.
Clean Panel Aesthetics: Hidden hinge design delivers a flush appearance when doors are closed, with adjustable sag correction for long-term alignment.
Dual Track Options: High track and water-blocking low track adapt to different drainage requirements and accessibility needs across project types.
Flexible Opening Configurations: C1–C9 configurations offer layout versatility from single-side to multi-panel bifold folding arrangements for diverse architectural plans.
Application Scenarios
Apartment: Balcony folding door creating seamless indoor-outdoor flow with thermal seal when closed and full opening ventilation for compact living spaces.
Home Office: Glass partition allowing natural light with acoustic separation, foldable for open-plan flexibility when collaborative space is needed.
Hotel: Terrace or courtyard access from guest rooms, combining climate insulation with panoramic opening for hospitality environments requiring flexible indoor-outdoor transitions.
Office Building: Adaptable facade solution for restaurants, cafes, and clubs requiring flexible indoor-outdoor commercial spaces with barrier-free low track options.
Outdoor: Pool and garden landscape viewing with thermal break framing; buyers should confirm weather resistance, water tightness, and surface finish for exposed conditions.
Residential Building: Large living room openings connecting interior spaces to balconies with thermal and acoustic performance for multi-unit residential projects.
Exterior: Balcony and terrace enclosures with Class 8 wind load resistance; buyers should verify wind pressure, water tightness, and installation conditions for high-rise or coastal locations.
Villa: Courtyard and garden indoor-outdoor connection with premium aesthetics, multiple color options, and custom bifold opening configurations tailored to architectural design.
FAQ
What are custom louvered bifold doors?
Thermal break aluminum folding doors with optional louver upgrade, featuring 14.8mm insulation strips and large foldable openings for indoor-outdoor connection in residential and commercial projects.
Where can these folding doors be used?
Suitable for balconies, courtyards, terraces, living rooms, pools, gardens, and commercial spaces like restaurants and cafes requiring flexible openings and climate insulation.
Can the opening configuration be customized?
Yes, C1–C9 configurations cover single-side folding, double-side folding, and multi-panel combinations to match diverse project opening layouts and architectural requirements.
What information is needed for a quote?
Provide opening dimensions, desired panel count, track type preference, color finish, glass configuration, and project location for an accurate quotation from DERCHI.
Are these suitable for B2B commercial projects?
Yes, with Class 8 wind load resistance, optional low track for barrier-free access, and electric louver upgrade for smart building integration in hospitality and commercial applications.
Are technical documents and test reports available?
Performance data is based on testing; request official test reports from DERCHI for project bidding and compliance verification before submission.
What should be confirmed before ordering?
Verify profile wall thickness, thermal insulation unit, glass configuration details, track type selection, and opening configuration with DERCHI before placing production orders.
What about certifications, packaging, and shipping?
Contact DERCHI directly for certification documentation, packaging specifications, and shipping arrangements relevant to your project location and compliance requirements.
