The 93 Thermal Break Series Folding Door by DEJIYOUPIN is an accordion style closet doors system built for large openings. Using insulated aluminum with a hidden hinge design, it pairs clean aesthetics with structural stability for residential and commercial spaces.
- Top-hung, bottom-slide structure with pulley components for stable operation
- 14.8mm thermal strip + 5+27A+5 insulating glass for energy performance
- Even-panel anti-sag design with adjustable hinges and balance bearings
Product Details
The 93 series uses a top-hung, bottom-slide structure where pulley components and hinges work together for stable movement. When closed, hinges sit fully concealed within the frame for an uninterrupted surface; when open, they connect adjacent panels. A strengthened center mullion between panels concentrates stress at the door's center point, distributing force evenly and reducing sagging — a common issue in wide bifold systems.
This system suits balconies, courtyards, terraces, villas, and spaces requiring large transparent openings. Unlike standard models, adjustable hinges with built-in balance bearings address sagging during and after installation. Two track options are available: a raised track for superior waterproofing and structural stability, or a low-profile track with an 18mm threshold for accessible passage — selection depends on site drainage conditions and accessibility needs.
Product Features
Hidden Hinge System: Hinges disappear when closed, giving accordion style closet doors a clean, minimalist look in visible living and commercial spaces.
Anti-Sag Engineering: Even panel count, adjustable hinges with balance bearings, and center stress concentration actively reduce panel sagging over years of use.
Thermal Insulation: 14.8mm thermal strip paired with 5+27A+5 insulating glass supports project energy compliance and occupant comfort.
Dual Track Options: Raised track for demanding waterproofing, or low-profile track with 18mm threshold for barrier-free passage in balcony and transition areas.
Large Opening Capability: Single panel height up to 3800mm with panels folding to one side, maximizing usable opening width.
Smooth Operation: Multi-wheel pulley components (three-wheel and two-wheel) with balance bearings enable stable pushing, pulling, and folding across full travel.
Customizable Styles
Glass Configuration: Standard 5+27A+5 insulating glass, or upgrade to 27A electric blinds for integrated shading and privacy control.
Track Selection: Raised track with 48mm threshold for enhanced waterproofing, or low-profile track with 18mm threshold for barrier-free passage — choose based on project conditions.
Panel Dimensions: Single panel width 500–850mm, height 1000–3800mm; total opening dimensions per project detail drawings.
Glass Grid Bars: Optional 25×25 grid bar for decorative lines or classic visual character.
Protective Plate: Optional plate under door panel for additional lower panel protection in high-traffic or exposed installations.
Hardware Accessories
Hidden Adjustable Hinge: Concealed hinge with adjustment function and balance bearing — addresses installation sagging while keeping folding motion smooth over time.
Multi-Wheel Pulley System: Three-wheel and two-wheel pulley components for top-hung bottom-slide structure, providing stable movement across the full folding range.
Handle Lock Assembly: Gray long panel handle with integrated lock points and lock tongue, paired with lock cylinder and key for secure panel locking.
Strengthened Center Mullion: Reinforced mullion between panels enhances wind pressure resistance and distributes force evenly to reduce structural sagging risk.
Track and Sealing System: Raised or low-profile track with multi-cavity profile and sealing rubber strips for waterproof performance matched to project drainage conditions.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 14.8mm thermal strip + 5+27A+5 insulating glass | Request specific U-value calculations for project climate and energy compliance. |
Wind Pressure Resistance | Strengthened center mullion with concentrated center stress point design | Confirm specific wind load test ratings in Pa against local building codes. |
Water Tightness | Raised track or low-profile track with multi-seal structure | Low-profile track requires on-site drainage and waterproof node detailing for high-waterproofing projects. |
Air Tightness | Multi-cavity insulated profile with sealing rubber strips | Verify air permeability rating with supplier for project energy performance documentation. |
Sound Insulation | 5+27A+5 insulating glass with insulated aluminum profile | Request specific acoustic test data in dB for project noise reduction requirements. |
Product Specifications
Parameter | Specification |
|---|---|
Series | 93 Thermal Break Series |
Product Type | Thermal Break Aluminum Folding Door |
Thermal Strip Width | 14.8mm |
Standard Glass | 5+27A+5 Insulating Glass |
Single Panel Width Range | 500mm–850mm |
Single Panel Height Range | 1000mm–3800mm |
Profile Wall Thickness | 1.5–2.5mm across components; key structural parts 2.0mm |
Raised Track Dimensions | 93mm W × 63mm H, threshold 48mm |
Low-Profile Track Dimensions | 93mm W × 33mm H, threshold 18mm |
Grid Bar Model | 25×25 |
Opening Method | Folding, top-hung bottom-slide |
Upper Fixed Glass | Not available |
Actual opening dimensions and total width require project detail drawings; confirm all specifications with procurement before ordering.
Advantages
Clean Visual Design: Hidden hinges when closed create a minimalist, uninterrupted surface suited to large opening spaces.
Long-Term Stability: Adjustable hinges with balance bearings and center stress concentration reduce panel sagging over years of regular use.
Flexible Track Options: Raised track for demanding waterproofing or low-profile track for accessible passage — selectable per project site conditions.
Wide Height Capability: Supports single panel heights up to 3800mm, accommodating tall openings in villas, courtyards, and commercial facades.
Project-Adaptable Configuration: Even panel count design, optional electric blinds, grid bars, and protective plates allow tailoring to diverse architectural and functional requirements.
Application Scenarios
Apartment: Connect living rooms to balconies — panels fold to one side, maximizing natural light and usable floor space in compact layouts.
Home Office: Partition work areas with bifold doors that provide acoustic separation when closed and open up for collaborative or multi-use needs.
Hotel: Create flexible event or suite divisions with clean aesthetics, energy performance, and smooth operation suited for hospitality environments.
Office Building: Divide conference rooms or open-plan areas with large bifold systems combining thermal insulation with professional visual presentation.
Outdoor: Transition between indoor and outdoor spaces on terraces and courtyards — confirm weather resistance and drainage detailing for exposed conditions.
Residential Building: Serve multi-family projects with systems meeting thermal, wind, and water performance requirements; confirm ratings against local building codes per climate zone.
Exterior: Install as exterior facades for villas and commercial frontages; strengthened mullions and raised track options support weather resistance — confirm wind pressure and water tightness for exposed installations.
Villa: Create dramatic wide openings for living rooms, courtyards, and sunrooms with hidden hinge bifold doors delivering atmospheric transparency and reliable operation.
FAQ
What are accordion style closet doors in the 93 Thermal Break Series?
Thermal break aluminum bifold doors with a hidden hinge system, built for large openings in residential and commercial spaces. Panels fold to one side for maximum opening width.
Where can these folding doors be used?
Balconies, living rooms, courtyards, terraces, sunrooms, villas, shops, and indoor-outdoor partitions requiring wide, transparent openings with thermal performance.
Can the folding door be customized for my project?
Yes — panel dimensions, track type, glass configuration, grid bars, electric blinds, and protective plates can all be tailored. Total opening dimensions require project detail drawings for accurate manufacturing.
What information is needed for a quote?
Opening width and height, preferred track type, panel count, glass configuration, project location, and quantity. Detailed drawings enable accurate pricing and lead time estimation.
Is this folding door suitable for B2B commercial projects?
Yes — the system supports project-specific engineering including wind load confirmation, waterproof node detailing, and custom configurations for residential complexes, hotels, and commercial buildings.
Are technical documents and installation drawings available?
Project-specific node drawings, profile cross-sections, and assembly plans for the 93 series are available. Confirm track type and hardware configuration with the supplier for your installation.
What should be confirmed before ordering?
Total opening dimensions, track selection, panel count (even number recommended), glass configuration, on-site drainage conditions for low-profile track, and compliance with local building codes.
What certifications, packaging, and shipping details apply?
Certification details, packaging methods, and shipping logistics should be confirmed with the supplier at quotation stage. Provide project destination and compliance requirements for accurate documentation.
