The 93 Thermal Break Aluminum Bifold Door by DEJIYOUPIN is a large-opening folding system for balconies, villas, and courtyards. Its top-hung bottom-sliding structure with concealed hinges delivers clean aesthetics and stable operation for indoor-outdoor connections.
- 14.8mm polyamide strip paired with 5+27A+5 insulated glass for thermal performance
- Concealed hinge design for a clean visual when panels are closed
- High or low track options adapt to different waterproofing and accessibility needs
- Suited for balcony, villa, courtyard, terrace, and sunroom projects
Product Details
The 93 series operates on a top-hung bottom-sliding mechanism, where pulley components and a hinge system work together for stable folding movement. A strengthened center mullion between panels distributes force evenly, and the even-panel count recommendation reduces the risk of door panel sagging over extended use. The center force point design further prevents structural deformation during long-term operation.
Unlike standard folding doors, this system conceals hinges entirely when closed, creating a minimalist facade. The 14.8mm thermal strip combined with 5+27A+5 double glazing addresses thermal performance for energy-conscious projects. Two track configurations serve different site needs: the high track (48mm threshold) prioritizes waterproofing and structural sealing, while the low track (18mm threshold) enables barrier-free passage for indoor-outdoor transitions, though it requires on-site drainage detailing.
Product Features
Concealed Hinge Design: Hinges are fully hidden when closed, eliminating exposed hardware for a clean, modern facade.
Top-Hung Bottom-Sliding Mechanism: Pulley components carry the load from the top track, reducing panel sagging and maintaining stable folding over time.
14.8mm Thermal Strip: Paired with insulated glass, the polyamide strip profile supports temperature control for energy-conscious projects.
Adjustable Hinges with Balance Bearings: Built-in bearings reduce pushing and pulling resistance, while adjustability corrects installation gaps and sagging.
Dual Track Options: Choose the high track for superior waterproofing or the low track for accessible, barrier-free passage.
Strengthened Center Mullion: The reinforced mullion between panels distributes force evenly and may improve wind pressure resistance for exposed installations.
Customizable Styles
Glass Configuration: Standard 5+27A+5 insulated glass included; optional 27A electric blinds upgrade for privacy and light control.
Frame Track Type: Select high track for waterproofing priority or low track for barrier-free transition, depending on site conditions.
Panel Size: Single panel width ranges 500–850mm and height 1000–3800mm; actual dimensions configured per project opening requirements.
Glass Grid Bars: Optional 25×25 grid bar model available for decorative or traditional architectural styling.
Bottom Guard Plate: Optional guard plate can be added to door panels for enhanced protection and sealing at the base.
Hardware Accessories
Concealed Hinges: Silver adjustable hinges with built-in balance bearings for smooth operation and gap correction during and after installation.
Multi-Wheel Pulley Components: 3-wheel and 2-wheel pulley structures enable stable top-hung bottom-sliding movement for panel operation.
Lock Core with Key: Standard keyed lock core provides secure access control on active door panels.
Panel Handle: Grey long handle with integrated lock points and latch mechanism for comfortable grip and reliable latching.
Sealing System: Rubber sealing strips and black fluorocarbon aluminum spacer bars with DEJI logo ensure insulated glass edge integrity.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 14.8mm thermal break strip + 5+27A+5 insulated glass | Request specific U-value test reports from manufacturer for project compliance |
Wind Pressure Resistance | Strengthened center mullion with center force point design | Request structural wind load test reports from manufacturer for high-wind project zones |
Water Tightness | High track 48mm threshold or water-blocking low track design | Confirm water penetration test ratings; low track requires on-site drainage detailing |
Air Tightness | Multi-cavity thermal break profile with sealing rubber strips | Confirm air permeability test data with manufacturer for your project requirements |
Sound Insulation | 5+27A+5 insulated glass configuration | No specific STC/Rw rating available; confirm acoustic performance with manufacturer directly |
Product Specifications
Parameter | Detail |
|---|---|
Series | 93 Thermal Break Series |
Thermal Break Strip Width | 14.8mm |
Standard Glass | 5+27A+5 Insulated Glass |
Single Panel Width Range | 500mm–850mm |
Single Panel Height Range | 1000mm–3800mm |
Main Profile Wall Thickness | 2.0mm (range 1.5–2.5mm across parts) |
High Track Dimensions | W93mm × H63mm, threshold 48mm |
Low Track Dimensions | W93mm × H33mm, threshold 18mm |
Grid Bar Model | 25×25 |
Upper Fixed Glass | Not available |
Notes | Actual opening dimensions and panel combinations must be confirmed with project detail drawings |
Advantages
Large Opening Release: Panels fold and gather to one side, creating wide unobstructed passage for indoor-outdoor connection.
Anti-Sagging Engineering: Even panel count design with adjustable hinges and balance bearings maintains long-term alignment and smooth operation.
Clean Visual Design: Concealed hinges and narrow frame profile deliver a modern minimalist appearance when panels are fully closed.
Flexible Track Selection: High track for waterproofing priority or low track for accessible passage, depending on project site conditions.
Project-Configurable System: Panel sizes, glass options, and track types adapt to specific architectural needs and varied opening conditions.
Application Scenarios
Apartment: Connects balcony to living area with a large folding opening that maximizes natural light; the low track option suits interior floor-level transitions without trip hazards.
Home Office: Folding partition creates flexible workspace separation when needed; insulated glass and thermal break profile help maintain temperature comfort during extended work hours.
Hotel: Grand opening for lobby or suite terrace access; concealed hinges maintain premium interior aesthetics and clean sightlines for upscale hospitality settings.
Office Building: Large folding partition for conference rooms or entrances; even panel configuration ensures stable daily operation under frequent use.
Outdoor: Courtyard or terrace connection with high track option for weather protection; confirm weather resistance, water tightness, and surface finish durability for exposed environments.
Residential Building: Balcony or living room folding door with insulated glass for energy performance; dual track options accommodate different floor conditions and accessibility needs.
Exterior: Villa or building facade folding door with wind-resistant center mullion; confirm water tightness, wind pressure ratings, and installation conditions for exterior exposure.
Villa: Signature large-opening door for courtyard or sunroom entry; customizable glass configurations and track options meet diverse architectural design requirements for luxury projects.
FAQ
What is the 93 Thermal Break Aluminum Bifold Door?
A large-opening folding door system by DEJIYOUPIN with a 14.8mm thermal strip, concealed hinges, and top-hung bottom-sliding structure for balcony, villa, and courtyard projects.
Where can this bifold door be used?
Suitable for balconies, living rooms, courtyards, terraces, sunrooms, shops, villas, and indoor-outdoor partitions requiring large opening access and flexible space connection.
Can the bifold door be customized for my project?
Yes. Panel sizes range 500–850mm wide and 1000–3800mm high, with high or low track options, glass upgrades, and grid bars available per project needs.
What information is needed for a quote?
Provide project opening dimensions, preferred panel count, track type selection, glass configuration, and total quantity. Contact DEJIYOUPIN with project detail drawings for accurate pricing and lead time.
Is this suitable for B2B bulk or project orders?
The system is built for project-based specification with configurable panel combinations, track options, and glass upgrades. Confirm MOQ and lead time with the manufacturer.
Are technical drawings and installation guides available?
Engineering drawings for 4+0 folding schemes with high and low track assemblies are available. Request specific 93 series installation instructions from the manufacturer.
What should I confirm before ordering?
Confirm actual opening dimensions, panel count preference, track type for site conditions, glass configuration, and whether on-site drainage detailing is needed for low track installations.
How should buyers confirm certification, packaging, shipping, or compliance details?
Confirm available certifications, packaging methods, and shipping options with DEJIYOUPIN directly for your target market. Professional installation is recommended for proper operation and warranty coverage.
