Our double glazed bifold doors break tradition with simple, elegant designs, slim frames, and balanced lines, filling spaces with natural light and fresh air.
Each fold creates a new level of spatial beauty. The CLS-73/65 series double glazed bifold doors—both hidden and exposed—deliver on quality and design.
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Safe and stable | Quick installation | Easy operation |
The double glazed bifold doors feature hidden flat handles with semi-automatic locking and come standard with stainless steel rollers, 304/420 housings, and corrosion-resistant bearings.
The hidden hinge double glazed bifold doors system features a concealed hinge design that improves sealing. It achieves excellent water and air tightness with staggered sealing strips at the panels’ top and bottom, plus three additional strips in between..
The exposed hinge double glazed bifold doors use 80% of the same profiles and hardware as the hidden hinge version. Their new train wheel rollers enhance smooth folding and sliding, while special corner brackets conceal the rollers without aluminum trims under the panels.
Innovative hardware design ensures safe and stable operation.
Our designers focused on safety, stability, and elegance, creating double glazed bifold doors with hidden flat handle locks and stainless steel train rollers that set new design and performance standards.
Three-layer sealing, perfectly tight joints
The three-strip sealing design works together with track seals to enhance the thermal performance and airtightness of the concertina doors
The foldable sliding door features a hidden flat handle for a sleek look and easy operation.
The foldable sliding door panels have hidden flat handles with a new design and a semi-automatic lock, combining handle and lock for easy opening and closing.
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Lock handle open | Lock handle rebound | Handle closed | Closed status |
The hinge-seal design provides full-coverage protection for the foldable sliding door, eliminating gaps to block wind and rain effectively.
Automatic rebound bolt design
The foldable sliding door uses an innovative simplified design, integrating the profile’s internal cavity to remove complex structures, making fabrication and installation easier. Combined with a flat handle, the door locks automatically with a simple pull after opening.
Anti-pinch design for enhanced safety.
High-quality automotive-grade foam seals are installed between the door panel and center post of the foldable sliding door, providing reliable protection by preventing finger injuries—even if fingers accidentally get caught in the gap during closing.
Concealed hanger wheel design
The foldable sliding door adopts a cutting-edge spring-flex upper hanger design, with the top roller offering secondary support while the bottom roller carries the primary load. This coordinated system delivers smooth and easy operation. A redesigned connector replaces the conventional hanger bolt mechanism, enhancing the foldable sliding door’s overall simplicity, safety, efficiency, and stability.
High-performance load-bearing roller system
The foldable sliding door uses a train wheel–inspired roller system with built-in brushes to keep the track clean and ensure smooth movement. Made with 420 stainless steel bearings and 304 stainless steel housings, plus surface passivation, the rollers offer over 90% better rust and corrosion resistance, outperforming industry standards.
Innovative water-blocking gasket design
The innovative water-blocking gasket design provides an additional sealing layer for the foldable sliding door, efficiently stopping rainwater from seeping in through any gaps
Original design of clearance slots for the roller assembly
By utilizing specialized corner brackets, the 45-degree joints of the door panels form concealed slots for the roller system. This streamlined structure improves the sealing efficiency of double glazed bifold doors.
Easy folding, full-width open space
The CLS-73/65 series double glazed bifold doors cater to a wide range of application needs, pushing beyond conventional folding limits to enable flexible and distinctive spatial layouts, while significantly enhancing indoor comfort.
Performance Specifications of Hidden Hinge Folding Doors with Glass System
Series | Air fightness | Water tightness | Wind Load Resistance | Thermal insulation (K) | Soundproofing (dB) |
Broken bridge | Level 8 | Leve15 | Level 9 | 2.6W/(m² ·K) | 30 |
Non broken bridge | Level 8 | Level 5 | Level 9 | 2.9W/(m² ·K) | 35 |
Performance Specifications of Exposed Hinge Folding Doors with Glass System
Series | Air fightness | Water tightness | Wind Load Resistance | Thermal insulation (K) | Soundproofing (dB) |
Broken bridge | Level 8 | Leve15 | Level 9 | 2.6W/(m² ·K) | 30 |
Non broken bridge | Level 8 | Level 5 | Level 9 | 2.9W/(m² ·K) | 35 |
