The DEJIYOUPIN 93 Series bifold door folds panels to one side for maximum opening width. Built on a top-hung, bottom-sliding structure with concealed hinges, it suits large transparent openings in villas, balconies, and commercial partitions.
- 14.8mm thermal break strip with 5+27A+5 double glazing for energy efficiency
- Hidden hinges vanish when closed for clean sightlines
- High or low threshold options adapt to different site conditions
- Even panel count recommended to minimize long-term sagging
Product Details
Pulleys and hinges work together in the top-hung, bottom-sliding structure to keep folding operation stable. The multi-cavity aluminum profile integrates a 14.8mm thermal barrier, while a reinforced center mullion between panels spreads wind load evenly and cuts the risk of door body sagging. Hidden adjustable hinges with built-in balance bearings keep the push-pull folding motion running smoothly.
Unlike standard bifold doors with exposed hardware, this system tucks hinges out of sight when closed, leaving uninterrupted sightlines. The adjustment function on each hinge tackles common panel sagging during and after installation, cutting field rework. Even panel counts are recommended to further limit long-term sag. Two track options — a raised track (48mm threshold) for stronger water blocking, or a low-profile track (18mm threshold) for barrier-free passage — let projects balance drainage against accessibility.
Product Features
Concealed hinges: Hardware disappears when the door closes, giving architectural interiors clean sightlines without visible mechanical parts.
Adjustable hinges with balance bearings: Field-adjustable hinges correct panel sag on site, reducing after-sales service calls and rework on large openings.
Reinforced center mullion: Spreads wind pressure across door panels, adding structural stability for semi-exposed or external-facing installations.
Dual threshold options: Raised track (48mm) for stronger waterproofing, or low-profile track (18mm) for accessible passage — match the option to your project's drainage and access needs.
Thermally broken profile: 14.8mm strip paired with 5+27A+5 double glazing supports energy-efficient climate control across diverse applications.
Even panel count optimization: Even-number configurations lower sagging risk and improve long-term reliability in demanding project environments.
Customizable Styles
Glass configuration: Standard 5+27A+5 insulating glass, or upgrade to 27A electric blinds for privacy and light control.
Track type: Raised track for enhanced waterproofing and structural stability, or low-profile track for accessible threshold-free passage.
Panel dimensions: Single panel width 500–850mm, height 1000–3800mm — tailored to opening specifications.
Glass grid bars: 25×25 decorative grid bar model available for traditional or styled aesthetic preferences.
Protective bottom panel: Optional panel under the door for added durability in high-traffic or commercial installations.
Hardware Accessories
Silver hidden hinges: Adjustable with built-in balance bearings — smooth folding operation and field adjustment to prevent panel sag.
Multi-wheel pulley components: 3-wheel and 2-wheel structures deliver stable top-hung sliding for heavy panels in large openings.
Lock cylinder with key: Standard keyed lock for secure closure in partition and access control applications.
Gray long panel handle: Integrated lock points and lock tongues for secure engagement and comfortable grip during daily operation.
Adjustment rods and connectors: Precision hardware for aligning panels and connecting folding mechanisms on site.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 14.8mm thermal break strip with 5+27A+5 insulating glass | Confirm specific U-value requirements with supplier for project compliance |
Wind Pressure Resistance | Reinforced center mullion enhances structural stability and force distribution | Confirm specific wind load Pa rating required for project location and building height |
Water Tightness | Raised track or water-blocking low track with multi-seal structure | Low-profile track requires on-site drainage detailing; confirm suitability for local climate |
Air Tightness | Multi-cavity thermal break profile with sealing rubber strips | Confirm air permeability rating requirements per local building compliance standards |
Sound Insulation | 5+27A+5 insulating glass with multi-cavity profiles and sealing system | Confirm specific STC or dB rating needed as no quantified acoustic data is provided |
Product Specifications
Parameter | Specification |
|---|---|
Series | 93 Thermal Break Series |
Thermal Break Strip Width | 14.8mm |
Standard Glass | 5+27A+5 insulating glass |
Single Panel Width Range | 500–850mm |
Single Panel Height Range | 1000–3800mm |
Profile Wall Thickness | 1.5–2.5mm (varies by profile part) |
High Track Dimensions | 93mm W × 63mm H (threshold 48mm) |
Low Track Dimensions | 93mm W × 33mm H (threshold 18mm) |
Glass Grid Bar Model | 25×25 |
Opening Method | Folding (panels concentrate to one side) |
Structure Type | Top-hung and bottom-sliding |
Advantages
Clean hidden hinge aesthetics: Concealed hinges when closed create uninterrupted sightlines for architectural interiors with refined visual appeal.
Anti-sag engineering: Even panel count design, adjustable hinges, and reinforced mullion reduce long-term door body sagging in large opening installations.
Flexible track solutions: Raised and low-profile track options let projects balance waterproofing performance against passage convenience.
Maximum opening access: Folding panels store to one side, delivering wide transparent openings for grand architectural spaces.
Streamlined installation: Factory pre-assembled glass components and adjustable hardware reduce on-site labor time for commercial projects.
Application Scenarios
Apartment: Connect balcony to living room with the low-profile track for easy daily passage; the insulated profile supports year-round energy efficiency in residential climate control.
Home Office: Create private workspace with folding doors; optional electric blinds give on-demand privacy without sacrificing natural light.
Hotel: Install grand partition openings with hidden hinge aesthetics; clean sightlines suit hospitality design standards in guest rooms and lobby areas.
Office Building: Divide commercial spaces with large transparent folding systems; confirm hardware load capacity for high-frequency operation in busy corporate environments.
Outdoor: Access terraces and courtyards with the raised track option for stronger waterproofing; confirm weather resistance and drainage design for exposed installations.
Residential Building: Separate living areas with thermally broken folding doors; insulating glass and sealing strips support comfortable indoor environments year-round in multi-unit developments.
Exterior: Serve as villa courtyard doors with wind-resistant reinforced mullion; confirm water tightness rating and surface finish durability for external-facing installations.
Villa: Deliver large-opening solutions with full custom configuration; hidden hinges and narrow frame visuals complement high-end architectural design in exclusive residential properties.
FAQ
What are custom made internal bifold doors?
They are thermally broken aluminum folding door systems for large openings, with panels that fold and store to one side. The 93 series features hidden hinges and top-hung bottom-sliding operation.
Where can custom made internal bifold doors be used?
Suitable for balconies, living rooms, courtyards, terraces, sunrooms, shops, villas, and indoor-outdoor partitions. Choose the raised track for waterproofing or low-profile track for accessible passage depending on site conditions.
Can bespoke internal bifold doors be customized?
Yes. Panel sizes range 500–850mm wide and 1000–3800mm high. Options include glass type, track scheme, grid bars, electric blinds, and protective panels tailored to project needs.
What information is needed for a quote on custom made internal folding doors?
Provide opening dimensions, desired panel count, track type preference, glass configuration, and project drawings. Detailed specifications enable accurate pricing and production planning.
Are these suitable for B2B commercial projects?
Yes. Doors are custom manufactured to project specifications with factory pre-assembled components. Technical drawings, profile cross-sections, and assembly node details support architectural specification and procurement.
What technical documents are available?
Profile system cross-sections, raised and low-profile track assembly drawings, and 4+0 folding plan node details are available. Confirm specific documentation needs with the supplier for your project.
What should be confirmed before ordering internal bifold doors custom size?
Verify actual opening dimensions, track type for site drainage conditions, panel configuration, glass requirements, and local compliance standards. Even panel counts are recommended to reduce sagging risk.
What about certifications, packaging, and shipping for bespoke internal bifold doors?
Confirm certification requirements for your target market with the supplier. Packaging method and shipping logistics are determined based on order volume and project location during the quotation process.
