The 93 Thermal Break Series bifold doors for small spaces feature a top-hung and bottom-sliding structure that folds panels to one side, maximizing usable opening width in compact areas. Built with thermal break aluminum and hidden hinges, this system suits balconies, living rooms, and indoor-outdoor partitions.
- Hidden hinge design delivers a clean, unbroken surface when closed
- Low track option at 18mm threshold for seamless passage in tight transitions
- Even-panel configuration recommended to reduce long-term sagging risk
- 14.8mm thermal break strip with insulating glass for energy efficiency
Product Details
The top-hung and bottom-sliding structure works with multi-wheel pulley components and a hidden hinge system containing balance bearings, enabling stable folding operation even in compact openings. A reinforced center mullion between panels distributes stress centrally, reducing the sagging risk that commonly affects narrow panels (500–850mm wide) used in folding doors for small spaces. This structural approach concentrates load at the center point rather than distributing it unevenly across the frame.
Unlike standard bifold systems, this 93 series integrates a 14.8mm thermal break strip paired with 5+27A+5 insulating glass for thermal and acoustic improvement. The hidden adjustable hinges address common installation sagging issues directly on site, while two track options — an 18mm low threshold for barrier-free passage and a 48mm high threshold for stronger water blocking — let buyers balance accessibility against weather protection. As a space saving folding door manufacturer, DEJIYOUPIN engineers these details for project-specific flexibility.
Product Features
Hidden Hinge Design: Panels present a clean unbroken surface when closed, enhancing visual simplicity in compact spaces where every detail is visible.
Adjustable Hinges with Balance Bearings: Simplifies on-site installation adjustment and helps maintain smooth push-pull folding operation over extended use periods.
Low Track at 18mm Threshold: Enables easier passage in tight indoor-outdoor transitions where accessibility and barrier-free movement matter most.
High Track at 48mm Threshold: Provides stronger water blocking for exposed locations requiring enhanced weather protection against rain and moisture.
Even-Panel Configuration: Reduces panel sagging risk and lowers long-term maintenance liability, a practical consideration for project buyers managing multiple units.
14.8mm Thermal Break with Insulating Glass: Supports energy efficiency and sound reduction for comfortable living in compact residential and commercial spaces.
Customizable Styles
Glass options: Standard 5+27A+5 insulating glass or upgrade to 27A electric blinds for privacy and light control in compact rooms.
Track type: Choose high track for superior waterproofing or low track for barrier-free passage in small space transitions.
Panel dimensions: Single panel width 500–850mm and height 1000–3800mm, configurable to fit specific small opening sizes.
Glass grid bars: Optional 25x25 grid bar design available for decorative or traditional style preferences in folding doors for small spaces.
Protective panel: Optional bottom protective panel can be added under door panel for added durability in high-traffic compact areas.
Hardware Accessories
Hidden adjustable hinges: Built-in adjustment function and balance bearings for smooth folding and easy on-site sagging correction.
Multi-wheel pulley components: Available in three-wheel and two-wheel structures for stable top-hung bottom-sliding operation in compact openings.
Handle lock set: Grey long panel handle with lock points and lock tongues for secure panel locking on active doors.
Lock cylinder with key: Standard key-operated lock cylinder included for reliable access control on active panels.
Folding hinges and connectors: Adjustment rods and folding hinges connect panels for coordinated bifold movement in space saving folding doors.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 14.8mm thermal break strip + 5+27A+5 insulating glass | No U-value provided; request test report for energy compliance |
Wind Pressure Resistance | Reinforced center mullion with centralized stress design | No wind load rating given; confirm local building code compliance |
Water Tightness | High track 48mm threshold for strong water blocking | Low track requires on-site drainage design for high waterproof needs |
Air Tightness | Multi-cavity thermal break profile with sealing rubber strips | No air permeability rating provided; request test data if required |
Sound Insulation | 5+27A+5 insulating glass configuration | No STC/dB rating provided; confirm acoustic performance for project needs |
Product Specifications
Parameter | Value |
|---|---|
Series | 93 Thermal Break Series |
Thermal Break Strip Width | 14.8mm |
Standard Glass | 5+27A+5 insulating glass |
Single Panel Min Width | 500mm |
Single Panel Max Width | 850mm |
Single Panel Min Height | 1000mm |
Single Panel Max Height | 3800mm |
Profile Wall Thickness | 1.5mm–2.5mm (varies by part) |
High Track Dimensions | 93mm W × 63mm H, threshold 48mm |
Low Track Dimensions | 93mm W × 33mm H, threshold 18mm |
Glass Grid Bar | 25x25 model |
Electric Blind Compatibility | 27A spacer |
Top Fixed Glass | Not available |
Notes | Actual dimensions must be confirmed with project detail drawings |
Advantages
Space-efficient bifold opening: Panels fold to one side, maximizing usable opening width in constrained spaces where swing doors are impractical.
Hidden hinge aesthetics: Hinges fully concealed when closed, delivering a clean modern look for visible installations in compact interiors.
Sag-resistant design: Even panels, reinforced mullion, and adjustable hinges reduce long-term door body sagging risk for lower maintenance.
Dual track flexibility: High track for weather exposure, low track for easy passage, adapting to project-specific needs in bifold doors for small spaces.
Thermal break construction: 14.8mm strip and insulating glass support energy-saving performance for year-round comfort in compact living areas.
Application Scenarios
Apartment: Bifold doors for small spaces connect living areas to balconies with low track thresholds, maximizing floor space and natural light in compact apartment layouts.
Home Office: Folding partition creates flexible work zones in small home offices, allowing open-plan feel or enclosed privacy as needed without swing clearance.
Hotel: Space saving folding doors separate bathroom or dressing areas in hotel rooms, maintaining openness while providing guest privacy on demand.
Office Building: Bifold partitions divide meeting rooms or collaborative spaces efficiently, folding away to create larger open areas for events or presentations.
Outdoor: Thermal break bifold doors open terraces and covered patios to the interior; buyers should confirm weather resistance and drainage for exposed installations.
Residential Building: Low track bifold doors connect living rooms to balconies or corridors, offering barrier-free passage and unobstructed views for residents in multi-unit buildings.
Exterior: High track option provides enhanced water blocking for exterior-facing bifold installations; confirm wind pressure and surface finish suitability for local climate conditions.
Villa: Large bifold openings connect villa living rooms to courtyards or terraces, creating expansive indoor-outdoor flow even from compact villa floor plans.
FAQ
What are bifold doors for small spaces?
They are thermal break aluminum folding doors designed to maximize opening width in compact areas, with panels that fold to one side to save floor space.
Where can these bifold doors be used?
Suitable for balconies, living rooms, courtyards, terraces, sunrooms, shops, villas, and indoor-outdoor partitions where space-saving operation is needed.
Can the bifold door be customized for my project?
Yes — panel dimensions, track type, glass configuration, and optional electric blinds or grid bars can be tailored to project requirements.
What information is needed for a quote?
Provide rough opening dimensions, total width, preferred track type, panel count, glass configuration, and project location for accurate pricing and lead time.
Do you support B2B bulk and project orders?
Yes, we support project-based customization with detailed technical drawings, profile specifications, and engineering confirmation for commercial and residential developments.
Are technical drawings and installation guides available?
Detailed profile system drawings, assembly plans, and node drawings for the 93 series are available; installation must follow series-specific documentation.
What should I confirm before ordering?
Confirm actual rough opening dimensions, track type selection based on waterproofing needs, panel count preference for even numbers, and glass configuration.
What certifications, packaging, and shipping details apply?
Certification and compliance details should be confirmed with our sales team; packaging and shipping are arranged based on order size and destination.
