An aluminum entry door for office buildings can be far more than a conventional swing door. DERCHI’s aluminum bifold door system creates wide, pillarless openings that maximize internal flow and natural light. Available in 78, 80, and 93 series, the folding panels stack compactly to one or both sides, adapting to lobbies, meeting rooms, and indoor-outdoor connections. Commercial buyers receive project‑specific support, from configuration to packaging.
- Three thermal break series: 78 (1.8 mm), 80 (2.0 mm, 80 mm frame), and 93 (2.0 mm 6063‑T5) to match performance needs.
- Configurable folding logic: panels fold inward or outward on straight, 90°, or curved tracks, with up to 60‑ft spans (80 series).
- Glass and hardware freedom: tempered, Low‑E, laminated, tinted, or frosted glass paired with KERSSENBERG or CMECH hardware.
Product Details
The aluminum folding door concept replaces a fixed wall with a series of linked panels that glide on a top‑hung or floor‑supported track. This eliminates the swing clearance of a traditional entry door and allows an entire office building facade or meeting room partition to dissolve when not needed. The panels fold in a concertina arrangement, combining swift daily access with the ability to open an entire wall for events or airflow. Engineered for commercial bifold door duty cycles, the system integrates concealed multi‑point locks and EPDM duckbill seals that maintain interior comfort even in high‑traffic environments.
Thermal break profiles form the backbone of the design. The 78 series uses a 1.8 mm break, the 80 series a 2.0 mm profile with an 80‑mm frame depth, and the 93 series adds 6063‑T5 alloy with a 93‑mm frame for larger panel heights up to 3800 mm. Argon‑filled double glazing on higher‑spec choices, along with Low‑E coatings, helps meet modern energy codes. The combination of robust aluminum accordion door engineering and selectable glass packages makes the system a practical office partition door for both interior comfort and exterior weather resistance.
Product Features
Thermal Break Aluminum Frame: Multi‑chamber profiles with polyamide thermal barriers cut heat transfer, reducing HVAC loads in office buildings and improving interior comfort year‑round.
Wide‑Span Folding Configuration: This aluminum accordion door approach can span up to 60 feet wide (80 series), turning a solid wall into an open gateway for collaborative spaces and events.
Commercial‑Grade Hardware: KERSSENBERG and CMECH handles, hinges, and concealed multi‑point locks are engineered for frequent use, delivering consistent security in a busy office.
Multi‑Layer Weather Sealing: EPDM gaskets and duckbill profiles work together to block drafts, dust, and water, maintaining stable indoor conditions for an office bifold door installation.
Flexible Glass Options: From acoustic laminated to solar‑control Low‑E, tinted, or frosted glass, each office bifold door can be tailored to privacy, glare reduction, or energy targets.
Configurable Track and Direction: Straight, 90° corner, or curved tracks and inward/outward folding give architects freedom to shape an office partition door that fits complex floorplans.
Customizable Styles
Glass type: Low‑E, laminated, reflective, tinted, triple glazing, built‑in blind glass, or frosted options adapt the panel to solar control, acoustics, or privacy needs.
Frame finish: Powder coating, anodized wood grain, or PVDF coating in a wide color range allows the custom aluminum bifold door to match corporate branding.
Panel size adaptation: Single panel widths can be specified within 500–850 mm (series‑dependent) and heights up to 3800 mm to fit architectural openings precisely.
Track configuration: Choose straight, 90° corner, or curved tracks so the folding panels follow the building layout without compromise.
Integrated extras: Insect screens, built‑in blinds, and low‑threshold sill options can be added to enhance comfort and accessibility in commercial settings.
Hardware Accessories
KERSSENBERG Handles (78/93 Series): Ergonomic lever handles in black or silver provide solid grip and a refined appearance, built for repeated daily use without degradation.
CMECH Handles (80 Series): Aluminum‑bodied lever handles offer a contemporary look with corrosion resistance, matching the heavy‑duty character of the 80 series.
Hidden Hinges: Concealed hinges keep the sightline clean when the door is closed, preserving the minimal aesthetic while supporting the folding panel weight.
Concealed Multi‑Point Lock: Integrated locking points spread along the active stile for even clamping and burglary resistance, important for ground‑floor office entry doors.
EPDM Duckbill Gaskets: Co‑extruded seals along frame and interlock gaps compress tightly to block water and air infiltration, even under wind pressure.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | 78 series: Uw 2.0–3.5 W/m²K; 80 series: Level 7; 93 series: U‑Factor 0.28 U.S./I‑P | Actual U‑value depends on glass specification; request NFRC‑rated report for the chosen configuration. |
Wind Pressure Resistance | 78 series: up to 5000 Pa; 80 series: Level 9; 93 series: 4.5 KPa | Design pressure must be matched to local wind load calculations for the office building location. |
Water Tightness | 78 series: 500–700 Pa; 80 series: Level 4; 93 series: 450 Pa | Higher ratings suit exposed facades; confirm test value with the chosen series and panel size. |
Air Tightness | 78 series: Class 3; 80 series: Level 6; 93 series: 1.8 m³/(m·h) | Air tightness class depends on the testing standard; request the relevant test certificate for compliance. |
Sound Insulation | 78 series: Rw 35–40 dB; 80 series: Level 5; 93 series: 30 dB | Installed acoustic performance can be improved with laminated or triple glazing; request lab reports. |
Product Specifications
Product type | Aluminum bifold door / folding door / accordion door |
Series | 78 Series, 80 Series, 93 Series |
Profile (78 Series) | 1.8 mm thermal break aluminum |
Profile (80 Series) | 2.0 mm aluminum, frame width 80 mm |
Profile (93 Series) | 2.0 mm 6063‑T5 aluminum, frame width 93 mm |
Standard glass (78/93) | 5 mm + 27A + 5 mm double tempered insulating (argon fill on 93 series) |
Standard glass (80 Series) | 5 + 20A + 5 mm tempered insulating |
Panel width range | 500–850 mm (series‑dependent) |
Panel height range | 1000–3800 mm (93 series max 3800 mm) |
Maximum span (80 Series) | Up to 60 feet wide (requires structural confirmation) |
Opening direction | Inward or outward folding |
Track types | Straight, 90° corner, curved |
Hardware | KERSSENBERG (78/93), CMECH (80); concealed multi‑point lock; hidden hinges; EPDM seals |
Glass options | Low‑E, laminated, reflective, tinted, frosted, triple glazing, built‑in blind glass |
Surface finishes | Powder coating, anodized wood grain, PVDF coating |
Customization | Size, glass, color, hardware, track, insect screen, integrated blinds |
Certifications (subject to configuration) | CE, NFRC, AS2047, CSA, IGCC, ISO9001 availability to be confirmed for the project market |
Lead time reference | Standard colors may ship in 4–6 weeks; actual lead time confirmed per order |
Advantages
Energy‑efficient thermal break: Aluminum bifold doors with polyamide strips reduce energy loss, helping office buildings meet increasingly strict energy codes without oversizing HVAC.
Space‑saving fold‑away design: Panels stack neatly to the side, opening up the full opening width to connect conference areas with outdoor plazas or separate work zones.
Durable commercial hardware: KERSSENBERG and CMECH components are selected to withstand high footfall, so the office entry door stays smooth and secure for years.
Architectural modularity: A single aluminum folding system can be reconfigured to 2+2, 4+2, or 0+6 panel arrangements, adapting to unique glazed wall dimensions.
Weather‑tight enclosure: Multi‑layer EPDM seals and engineering keep weather on the right side, supporting comfortable interiors even in wind‑driven rain.
Application Scenarios
Apartment: A compact aluminum accordion door opens the living area to a balcony, making a small apartment feel spacious while maintaining weather separation when closed.
Home Office: Use an office partition door style bifold to divide a home office from living space, quickly opening for after‑hours family time and closing for focused work.
Hotel: A commercial bifold door links the lobby with a poolside terrace, allowing easy flow during events and secure closure at night with concealed multi‑point locks.
Office Building: An aluminum entry door for office buildings in a bifold form unzips a meeting room wall, creating one large conference space on demand without permanent walls.
Outdoor: For covered semi‑exterior spaces, the folding door provides a barrier against weather; buyers should confirm water tightness and surface finish for local exposure.
Residential Building: In a penthouse, a bifold door stretches across the living room, opening fully to a terrace and delivering panoramic views while meeting acoustic targets.
Exterior: When used as an exterior folding wall, wind pressure resistance and corrosion‑proof finish are critical; project‑specific performance data should be verified before ordering.
Villa: A full‑height aluminum folding door dissolves the boundary between a villa kitchen and garden, inviting natural light and fresh air into daily living, with Low‑E glass to manage heat gain.
Inquiry Guidance
To request a quote, please share your project location, required size, quantity, preferred frame color, glass type, hardware requirements, and drawings or reference photos if available.
FAQ
What is an aluminum entry door for office buildings in a bifold style?
It is an aluminum folding door system where multiple panels fold to one or both sides, creating a wide opening without a conventional swing entry. DERCHI offers thermal break series (78/80/93) sized for office lobbies, conference rooms, and interior‑exterior links.
How do I get a project quote?
Provide your intended series, panel count, approximate dimensions, glass type, hardware preference, surface finish, track layout, and target market. Our team uses these details to prepare a tailored quotation without published pricing.
Can I customize glass, color, and hardware?
Yes. Glass options range from Low‑E to laminated or tinted, frame colors can be powder coated or anodized, and hardware can be specified as KERSSENBERG or CMECH depending on the series.
What certifications do these doors hold?
Certifications such as CE, NFRC, AS2047, CSA, and ISO9001 may be available, but coverage depends on the exact product configuration and local market. Request current certificates for your project.
What is the typical lead time?
For standard colors, lead time can be as short as 4–6 weeks, but this is a reference only. Custom finishes, large orders, and glass procurement affect the timeline; confirm with your sales contact.
How are the doors packaged for export?
Export‑grade packaging protects aluminum profiles and glass with corner reinforcements and moisture‑resistant materials. Full packaging specifications are provided together with the commercial offer.
Do you provide installation support?
We supply detailed installation manuals and can offer remote guidance, but on‑site installation is the buyer’s responsibility. Local contractors familiar with folding door systems are recommended.
