The 93 Thermal Break Series by DEJIYOUPIN delivers 1800mm aluminium bifold doors engineered for large opening spaces. Featuring a top-hung bottom-sliding structure with hidden hinges, this system combines structural stability with clean aesthetics for residential and commercial projects.
- 14.8mm thermal break strip paired with 5+27A+5 insulated glass for energy-conscious builds
- Hidden hinge design conceals hardware when closed for a minimalist narrow-frame appearance
- Configurable high or low track options to match project drainage and accessibility needs
- Factory-direct supply from DEJIYOUPIN for B2B project buyers seeking reliable sourcing
Product Details
The 93 Thermal Break Series bifold door employs a top-hung and bottom-sliding structure where pulley components and a hinge system work together for stable operation. A reinforced center mullion between door panels concentrates stress at the central point, reducing sagging risk — a common failure in ordinary bifold systems that lack centralized load engineering. Adjustable hinges with built-in balance bearings allow on-site correction, and an even panel count recommendation further distributes force evenly across the system.
Designed for balconies, living rooms, courtyards, terraces, sunrooms, shops, and villas, this thermal break aluminium bifold door folds panels to one side, releasing the full opening width. Hidden hinges deliver clean visual lines when closed, while two track options address different site needs: the high track (48mm threshold) provides stronger water blocking for exposed locations, and the water-blocking low track (18mm threshold) enables easier passage where accessibility matters. Project-specific drainage coordination is recommended for low track installations.
Product Features
Thermal Break Insulation: 14.8mm thermal break strip paired with 5+27A+5 insulated glass helps reduce heat transfer, supporting energy-conscious residential and commercial project requirements where thermal performance matters.
Hidden Hinge Aesthetics: Hinges fully concealed when the door is closed deliver a clean narrow-frame visual, eliminating visible hardware for premium architectural spaces that demand minimalist design.
Anti-Sagging Engineering: Reinforced center mullion with centralized stress point design and adjustable hinges with balance bearings address common bifold door sagging issues, improving long-term structural reliability.
Top-Hung Bottom-Sliding Operation: Pulley-driven folding system provides stable and smooth push-pull operation even for large panel configurations reaching up to 3800mm in height, ensuring consistent daily use.
Dual Track Options: High track with 48mm threshold for enhanced water blocking or low track with 18mm threshold for barrier-free passage, selectable based on project site drainage conditions.
Flexible Panel Configuration: Single panel width ranges from 500mm to 850mm with even panel count recommendation, ensuring balanced force distribution and long-term structural stability across various opening sizes.
Customizable Styles
Glass Configuration: Standard 5+27A+5 insulated glass or optional upgrade to 27A electric blinds for integrated shading and privacy control in commercial and residential settings.
Track Type Selection: Choose high track for superior waterproofing or water-blocking low track for accessible threshold, based on project site conditions and drainage requirements.
Panel Size Range: Single panel width from 500mm to 850mm and height from 1000mm to 3800mm, configurable per opening dimensions and project specifications.
Glass Grid Bars: Optional 25x25 grid bar decoration available for projects requiring retro styling or decorative line detailing on insulated glass panels.
Bottom Guard Plate: Optional bottom guard plate can be added to door panels for additional protection in high-traffic or commercial installations where durability matters.
Hardware Accessories
Hidden Hinges: Silver concealed hinges with built-in adjustment function and balance bearings for smooth folding operation and on-site sagging correction during installation.
Multi-Wheel Pulley Assemblies: 3-wheel and 2-wheel pulley structures enabling stable top-hung bottom-sliding operation across large panel configurations for consistent daily performance.
Lock Core with Key: Standard keyed lock core providing secure panel locking for external-facing and partition applications where access control is required.
Panel Handle: Grey long panel handle integrated with lock points and lock tongue for comfortable grip and reliable latching during regular use.
Folding Hinges and Connectors: Folding hinges and adjustment rods with connectors ensuring synchronized panel movement and proper alignment during opening and closing cycles.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 14.8mm thermal break strip + 5+27A+5 insulated glass | Confirm specific U-value requirements with manufacturer as no numerical rating is published |
Wind Pressure Resistance | Reinforced center mullion with centralized stress point design | Confirm wind load grade in Pa for your project region as no test rating is published |
Water Tightness | High track or water-blocking low track with sealing strips | Low track requires site-specific drainage design; confirm water penetration resistance grade for project |
Air Tightness | Multi-cavity thermal break profile with sealing rubber strips | Confirm air permeability rating requirements with manufacturer for compliance verification |
Sound Insulation | Insulated glass with multi-cavity structure and sealing strips | Confirm specific decibel or Rw rating requirements with manufacturer as no numerical data is published |
Product Specifications
Parameter | Specification |
|---|---|
Product Name | 93 Thermal Break Series Bifold Door |
Product Type | Thermal break aluminium bifold door |
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 |
Profile Wall Thickness (Nominal) | 2.0mm |
Profile Wall Thickness (Actual Range) | 1.5mm–2.5mm |
High Track Threshold Height | 48mm |
Low Track Threshold Height | 18mm |
High Track Total Height | 63mm |
Low Track Total Height | 33mm |
Track Width | 93mm |
Glass Grid Bar Model | 25x25 (optional) |
Notes | Final specifications subject to project drawing confirmation with manufacturer |
Advantages
Factory-Direct Supply: Manufactured by DEJIYOUPIN with systematic profile coding and branded components for consistent quality control across production batches.
Structural Stability: Reinforced center mullion and even-panel recommendation reduce sagging risk in large opening configurations where long-term reliability is critical.
Clean Aesthetic: Hidden hinge design eliminates visible hardware when closed, delivering a minimalist narrow-frame appearance suited to contemporary architectural projects.
Project Flexibility: Dual track options and wide panel size range accommodate diverse site conditions and architectural requirements across residential and commercial builds.
Thermal Performance System: 14.8mm thermal break strip with insulated glass forms an integrated thermal barrier for energy-conscious projects requiring heat transfer reduction.
Application Scenarios
Apartment: Connects living areas to balconies with a full-width opening that maximizes natural light and ventilation in compact residential layouts where space efficiency and openness are priorities.
Home Office: Partitions workspace from living areas with a foldable transparent wall that maintains openness when retracted and provides visual separation when closed for focused work.
Hotel: Creates seamless indoor-outdoor transitions for lobby lounges, pool areas, or restaurant terraces with clean hidden-hinge aesthetics that align with hospitality interior design standards.
Office Building: Divides conference or reception areas with large glass panels that fold away for open-plan events and presentations, offering flexible spatial configuration for corporate environments.
Outdoor: Opens courtyard or terrace spaces fully with the high-track waterproofing option for exposed environments; buyers should confirm weather resistance and wind pressure ratings for the specific location.
Residential Building: Serves as balcony or entrance doors in multi-unit developments with low-track accessibility for resident convenience; confirm water tightness and drainage design for each installation context.
Exterior: Provides villa or shop front openings with thermal break insulation and configurable panel widths for varied structural dimensions; confirm surface finish durability and installation conditions for exterior exposure.
Villa: Delivers grand-scale openings for courtyard, sunroom, or living room connections where maximum transparency and premium aesthetics are essential for high-end residential architectural statements.
FAQ
What are 1800mm aluminium bifold doors?
They are thermal break aluminium folding door systems designed for approximately 1800mm-wide openings, featuring a top-hung bottom-sliding structure with hidden hinges for large transparent openings in residential and commercial projects.
Where can these bifold doors be used?
Suitable for balconies, living rooms, courtyards, terraces, sunrooms, shops, villas, and indoor-outdoor partitions where large opening widths and maximum transparency are required for spatial connectivity.
Can the doors be customized for my project?
Yes, panel sizes range from 500–850mm wide and 1000–3800mm high, with options for glass type, track height, grid bars, electric blinds, and bottom guard plates to match project specifications.
What information is needed for a quote?
Provide total opening width and height, desired panel count and configuration, track type preference, glass specification, quantity, and project location for accurate pricing and lead time estimation from the manufacturer.
Do you support B2B bulk and project orders?
Yes, as a manufacturer we support project procurement with technical drawings, panel configuration recommendations, and coordinated production for bulk orders — confirm specific requirements and timelines with our sales team.
Are technical documents and installation drawings available?
Project-specific node drawings and profile cross-section data are available upon request; installation should follow 93 series bifold door specific drawings, not generic brand installation videos.
What should I confirm before placing an order?
Confirm total opening dimensions, panel count with even numbers recommended, track type based on site drainage, glass configuration, and any optional features to ensure accurate production and delivery.
What about certifications, packaging, and shipping?
Certification and compliance details should be confirmed with our team for your target market requirements; packaging and shipping arrangements are coordinated per order volume and destination — contact us for specifics.
