The 78 Series bifold door with glass panel is a thermal break aluminum accordion folding door engineered with a bottom load-bearing structure for long-term stability. It creates wide openings between indoor and outdoor spaces, suiting both residential and commercial buyers.
- Inward or outward folding with straight, 90-degree corner, or curved track configurations
- Hidden adjustable hinges and anti-pinch safety design for clean aesthetics and user protection
- Customizable glass options, surface finishes, and hardware configurations for project-specific requirements
Product Details
The 78 Series thermal break aluminum bifold door employs a bottom load-bearing, top-guided structural principle. Unlike top-hung systems that transfer all panel weight to the header, this design carries load through the bottom track, reducing structural stress on the building frame. A reinforced center mullion between each panel concentrates load at the center, improving wind resistance and preventing door sagging. An even number of panels is recommended to maintain structural balance and avoid alignment issues over time.
This bifold door with glass panel accommodates patio-to-living room transitions, sunrooms, commercial partitions, and architectural openings requiring 90-degree corner or curved track layouts. Panels fold accordion-style to create wide openings, while closed panels form a virtual glass wall for maximum daylight. With individual panel widths from 500–800mm and heights from 1000–2800mm, the system enables flexible configurations for varied project requirements.
Product Features
Bottom Load-Bearing Structure: Weight carried by the bottom track reduces header stress and prevents panel sagging over time, giving project managers confidence in long-term structural performance.
Hidden Adjustable Hinges: Concealed when the door is closed for clean sightlines; built-in adjustment function corrects post-installation sagging without costly reinstallation or panel removal.
Multi-Track Configurations: Straight, 90-degree corner meeting, or curved track options adapt to complex architectural layouts that standard sliding or single-track doors cannot accommodate.
Reinforced Center Mullion: Centralized load distribution between each panel improves wind resistance and structural integrity, which is particularly important for exterior-facing bifold glass door installations.
Anti-Pinch Safety Design: An incorporated anti-pinch structure prevents finger entrapment during the panel folding process, supporting residential safety code compliance and commercial occupant protection requirements.
Wide Natural Light Intake: Closed panels form a near-transparent glass wall using slim thermal break aluminum profiles, maximizing daylight penetration in living and commercial spaces.
Customizable Styles
Glass Configurations: Upgrade from standard 5+27A+5mm double insulating glass to triple glazed, laminated, Low-E, reflective, or tinted options for climate and privacy needs.
Between-Glass Blinds: Select 23A magnetic blinds or 27A electric and light-controlled blinds sealed between glass panes for low-maintenance privacy and light control.
Frame Surface Finishes: Choose powder coating, anodized, wooden grain transfer, or PVDF coating to match project design palettes and environmental exposure conditions.
Track Layouts: Configure straight run, 90-degree corner meeting, or curved track to fit unique architectural openings and spatial constraints on site.
Panel Sizing: Customize panel widths from 500–800mm and heights from 1000–2800mm; even panel counts recommended for optimal structural balance and long-term performance.
Hardware Accessories
KERSSENBERG Lock-Toggle Handle: Aluminum construction delivers durable, corrosion-resistant operation suitable for frequent daily use in residential and commercial settings.
KERSSENBERG Pull Handle: Aluminum pull handle engineered for comfortable grip and smooth panel movement during accordion folding operation.
Hidden Hinges with Adjustment: Concealed hinge system maintains clean sightlines when closed; built-in adjustment corrects post-installation alignment without removing door panels.
Bottom Wheels (3+1 or 2+2): Configurable wheel layouts distribute panel weight evenly along the bottom track for stable and smooth rolling motion.
Top Guide Wheel: Precision top guide wheel keeps panels aligned during operation, complementing the bottom load-bearing system for balanced movement.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | From 2.0 W/(㎡·K) (Lucerne brand data) | Confirm the U-value for your selected glass configuration and brand variant. |
Wind Pressure Resistance | Tested up to 4.5Kpa (Lucerne brand data) | Verify rating applies to your panel count and height; request test certificate. |
Water Tightness | Tested up to 350Pa (Lucerne brand data) | Confirm the rating with your selected track type and installation conditions. |
Air Tightness | From 1.8 m³/(m·h) (Lucerne brand data; unit needs verification) | Unit may need verification; request test report with correct standard. |
Sound Insulation | From 30dB (Lucerne brand data) | Confirm if Rw or STC; upgraded glass may improve acoustic performance. |
Product Specifications
Parameter | Specification |
|---|---|
Product Name | 78 Series Bifold Door with Glass Panel |
Product Type | Accordion Folding Glass Door |
Material | Thermal break aluminum (wood and uPVC optional) |
Glass Type | 5mm + 27A + 5mm double tempered insulating glass (standard) |
Glass Thickness | 5mm tempered (standard); upgrades available |
Frame Option | Powder coating, anodized, wooden grain, PVDF (availability varies by brand variant) |
Hardware | KERSSENBERG full set (Lucerne brand); confirm for other variants |
Opening Style | Inward folding / Outward folding |
Size Range | Panel width 500–800mm; height 1000–2800mm |
Application | Residential and commercial; interior and exterior |
Customization | Glass type, blinds, flyscreen, surface finish, track layout, panel dimensions |
Notes | Profile thickness, frame width, and thermal break strip width vary by brand variant — confirm with supplier before specification |
Advantages
Structural Stability: Bottom load-bearing design with reinforced center mullion reduces long-term panel sagging risk compared to top-hung bifold alternatives.
Flexible Architecture: Straight, corner, and curved track options accommodate diverse building layouts without compromising door operation or structural integrity.
Post-Install Adjustability: Hidden hinges with built-in correction allow fine-tuning after installation, reducing costly rework and alignment issues on site.
Safety Compliance: Anti-pinch design and multi-point locking address residential safety codes and commercial security requirements for broader project acceptance.
Low Maintenance: Corrosion-resistant aluminum frame and quality hardware require only periodic cleaning and lubrication for reliable operation over time.
Application Scenarios
Apartment: Interior bifold doors with glass panels save floor space in compact layouts while providing natural light and flexible room partitioning for urban living areas.
Home Office: Accordion folding glass door panels open to adjacent spaces for collaborative work, or close to provide privacy and sound separation during focused tasks.
Hotel: Create striking lobby-to-terrace transitions or flexible event space dividers using bifold glass doors for exterior openings, connecting indoor and outdoor guest spaces with natural daylight.
Office Building: Partition conference rooms or reception areas with interior bifold doors with glass panels that maintain visual openness while enabling acoustic separation when required.
Outdoor: Connect patios, decks, or pool areas to interior living spaces; buyers should confirm weather resistance, water tightness, and surface finish durability for exposed conditions.
Residential Building: Suited for multi-unit developments requiring durable, low-maintenance bifold doors with safety features and energy-efficient insulating glass for common areas or private balcony access.
Exterior: Face weather exposure with water-tight track options and wind-resistant mullion design; verify wind pressure rating, surface treatment, and installation method for your local conditions.
Villa: Maximize panoramic views and indoor-outdoor living with slim-profile bifold glass walls that fold away to open entire facades to gardens, pools, or terrace areas.
FAQ
What is a bifold door with glass panel?
An accordion-style folding door with tempered insulating glass panels set in a thermal break aluminum frame, creating wide openings between indoor and outdoor spaces.
Where can bifold glass doors be used?
Suitable for patios, sunrooms, living rooms, commercial partitions, hotels, and villas; available in interior and exterior configurations with appropriate glass and track options for each application.
Can the bifold door be customized for my project?
Yes — glass type, surface finish, track layout, panel dimensions, and hardware configurations can be customized to meet specific architectural and performance requirements for your project.
What information do I need to provide for a quote?
Provide opening dimensions, desired panel count, track type, glass configuration, surface finish, and project location; brand variant selection also affects pricing, specifications, and lead times.
Do you support B2B or bulk project orders?
This bifold glass door manufacturer offers flexible customization and multiple brand variants supporting distributor sourcing, contractor projects, and developer requirements; confirm project terms during inquiry.
Are technical documents or drawings available?
Specification sheets and structural details are available for project submission; confirm available formats and applicable test reports with the technical team during the inquiry process.
What should I confirm before placing an order?
Verify exact opening dimensions, panel count (even numbers recommended), glass and hardware selections, track configuration, and applicable performance ratings for your specific project requirements.
What about certifications, packaging, and shipping?
Certification availability varies by market and brand variant; packaging uses protective crating for glass panels; shipping terms and delivery timelines confirmed during quotation based on order scope.
