DERCHI manufactures folding aluminium doors at its Foshan facility. Three thermally broken bifold series—78, 80, and 93—give builders and designers reliable systems for wide openings. Each door combines aluminium frames with double or triple glazing, heavy-duty hardware, and multiple finish options.
- 78 Series for standard residential, 80 Series for commercial widths, 93 Series for tall panels and high thermal performance
- Glass, color, panel count, track type, and integrated blinds or flyscreens can be specified per order
- Produced by a factory with over 25 years in aluminium door and window manufacturing
- Used in apartments, villas, storefronts, hotel event spaces, and office partitions
Product Details
These multi-panel aluminium doors run on a top or bottom track and fold against one or both sides when opened. Concealed hinges connect each leaf, and polyamide strips inside the profile block the thermal path between the inner and outer aluminium, reducing condensation and heat loss. Panels up to 850 mm wide and 3800 mm high (in the 93 line) ride on precision rollers and lock with multipoint hardware from KERSSENBERG and CMECH.
Contractors specify these doors to link living areas with patios, gardens, and terraces. Commercial projects—cafés, hotel ballrooms, retail openings—use them to turn entire facades into passable thresholds. EPDM gaskets, robust locking points, and optional low thresholds make them practical for both daily residential use and high-traffic commercial settings.
Product Features
Thermal Break Profiles: Polyamide strips interrupt heat flow through the frame, helping keep indoor temperatures stable and energy bills lower.
Weather Sealing: Multiple EPDM seals and duckbill gaskets stop air drafts and water ingress; test data shows water tightness up to 700 Pa on selected series.
Hardware System: Branded KERSSENBERG or CMECH handles and concealed, self-adjusting hinges hold panels in alignment through thousands of cycles.
Glass Packages: Specify double/triple tempered, Low-E, laminated, tinted, or reflective glass to control light, privacy, and solar gain.
Panel Layouts: Configurations from 2 to 10 panels, inward/outward swing, and 90° corner joins fit narrow balconies to wide storefronts.
Project Support: DERCHI supplies engineering drawings, OEM/ODM production, and phased delivery schedules to match construction timelines.
Customizable Styles
Glass Options: Tempered, laminated, Low-E, reflective, tinted, frosted, and argon-filled units allow the right balance of safety, insulation, and daylight.
Frame Finishes: Powder coat, anodized wood grain, and PVDF coatings are available in shades like Caramel Coffee, Black Crystal Stone, and Quartz Gray.
Panel Sizes: Widths from 500 mm to 850 mm and heights up to 3800 mm can be set to suit each opening’s dimensions.
Opening Direction: Panels can fold inward, outward, or combine both in a 90° corner, depending on room layout and traffic paths.
Add-ons: Integrated magnetic or solar blinds, folding flyscreens, and frame casing packages (47–100 mm) finish the installation and add comfort.
Hardware Accessories
Handle Sets: KERSSENBERG and CMECH aluminium handles stand up to repeated use in homes and commercial spaces without loosening.
Concealed Hinges: Hidden and self-adjusting hinges keep the panels moving smoothly and maintain a clean sightline from the exterior.
Locking System: Multi-point locks and automatic bolts secure each panel in the closed position, deterring forced entry and keeping panels aligned.
Track & Rollers: Top-hung or bottom-track configurations with precision rollers allow easy manual operation even on heavy glazed panels.
Seals & Gaskets: EPDM and Jiangyin Haida strips with fin-shaped and bent duckbill profiles block drafts, dust, and driving rain.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | Uw 2.0–3.5 W/m²K (78 Series); U-Factor 0.28 (93, argon-filled) | Final U-value depends on glass pack and frame dimensions; request project-specific calculation. |
Wind Pressure Resistance | Up to 5000 Pa (78 Series); 4.5 kPa (93) | Confirm maximum panel size and local wind load requirements with an engineer. |
Water Tightness | 500–700 Pa (78 Series); 450 Pa (93); commercial page states 700 Pa | Higher ratings are available; request test reports for exposed or coastal locations. |
Air Tightness | Class 3 (78 Series); 1.8 m³/(m·h) (93) | Ask which standard applies; request comparison with EN 12207 or equivalent. |
Sound Insulation | Rw 35–40 dB (78 Series); 30 dB (93, likely Rw) | Acoustic performance improves with thicker or laminated glass; confirm with final glass make-up. |
Product Specifications
Specification Item | Value |
|---|---|
Product Type | Folding / Bifold / Accordion Aluminium Door |
Available Series | 78 Series, 80 Series, 93 Series |
Frame Width | 80 mm (80 Series), 93 mm (93 Series); 78 Series to be confirmed |
Profile Material | Thermal break aluminium (6063-T5 for 93 Series) |
Profile Thickness | 1.8–2.0 mm for 78 Series (confirm with drawings); 2.0 mm for 80 and 93 |
Standard Glass | 5+27A+5 double tempered (78/93); 5+20A+5 hollow (80); argon-filled optional |
Max Panel Width | 500–850 mm (80/93); 500–800 mm (78) |
Max Panel Height | 1000–2800 mm (78); 1000–3000 mm (80); 1000–3800 mm (93) |
Opening Direction | Inward, outward, 90° corner possible |
Number of Panels | 2, 4, 6, 8, 10 (configurable) |
Surface Finishes | Powder coating, anodized wood grain, PVDF coating |
Optional Accessories | Built-in blinds, flyscreen, frame casing packages (47/70/75/100 mm), low track |
Note | All specifications subject to final project-approved drawings. Confirm with DERCHI before ordering. |
Advantages
Factory Background: Over 25 years of production at a 70,000 m² site with around 600 employees and an annual capacity of about 300,000 m² of doors and windows.
Three Purpose-Built Series: The 78 line handles standard residential, the 80 targets wide commercial openings, and the 93 delivers taller panels and higher thermal ratings.
Full Customisation: Glass type, frame finish, panel dimensions, opening direction, and accessories are specified per project, not off-the-shelf.
B2B Cooperation: OEM/ODM orders accepted, reseller pricing, showroom design assistance, and technical support from initial drawing to on-site installation.
Durable Components: Branded KERSSENBERG and CMECH hardware combined with EPDM seals contributes to reliable long-term performance in busy environments.
Application Scenarios
Apartment: A narrow balcony becomes a bright, open extension of the living area when a folding door replaces the standard slider—opening the full width for ventilation and daylight.
Home Office: A bifold partition separates a quiet workspace without losing natural light; stacked panels quickly reconnect the room for family time.
Hotel: Event halls use aluminium bifold doors to merge indoor banquet spaces with outdoor terraces, allowing guests to move freely during receptions and breaks.
Office Building: Meeting rooms equipped with folding glass doors can expand into lobbies for large gatherings or close off for private sessions, adapting to changing needs.
Outdoor: For semi-exposed patios, top-hung systems with drainage channels and high water tightness are recommended; consult our team about sealants and corrosion-resistant finishes.
Residential Building: Common lounges connect to rooftop decks through folding doors, adding usable square footage; Low-E glass helps satisfy local energy codes.
Exterior: Exterior facades demand careful wind and water verification; request project-specific test data and consider raised thresholds for added storm protection.
Villa: Wide argon-filled double-glazed doors with Low-E coatings preserve panoramic views while maintaining indoor thermal comfort and cutting glare.
FAQ
Which projects are folding aluminium doors best for?
They work especially well in wide openings: residential patios, commercial storefronts, hotel ballrooms, and office partitions—anywhere you want to blur the line between indoors and outside.
Can these doors be installed indoors and outdoors?
Yes, in apartments, villas, restaurants, and commercial lobbies. For fully exposed locations, confirm weather resistance ratings and finish durability with our team.
Can I order custom glass and finishes?
Absolutely. We tailor glass type (tempered, Low-E, laminated), frame color, panel dimensions, opening direction, and extras like blinds or flyscreens to your design and performance needs.
What information do I need to provide for a quotation?
Project location, opening dimensions, preferred number of panels, glass and finish requirements, performance targets, and approximate quantity. We’ll return a detailed offer with technical datasheets.
Do you supply B2B projects and OEM orders?
Yes. DERCHI works with dealers, contractors, and developers. We offer OEM/ODM, bulk supply, CAD/BIM drawings, and installation guidance. Ask about our partner program for reseller terms and training.
Can I get test reports and certifications?
We provide performance summaries—U-value, wind, water, sound—and relevant certification documents (NFRC, CE, etc.) for the configuration you order.
What should I double-check before ordering?
Verify panel dimensions, opening direction, local code requirements, and hardware choice. Request a physical color sample and confirm packaging and delivery terms.
How are certifications, packaging, and shipping managed?
Export-grade packaging is standard; we arrange shipping based on your Incoterms and destination. Certification files are sent with the shipment documents.
