The DERCHI aluminum door for public buildings is a thermal break entrance system designed for custom project fabrication, not off-the-shelf stock. It's built for heavy daily traffic in civic, healthcare, education, and transportation sectors, with full control over dimensions, glass, hardware, and performance specifications.
- Made-to-order per door schedule and elevations — no fixed sizes.
- Thermal break with 6063-T5 aluminum and EPDM seals for energy efficiency and weather tightness.
- Suitable for government offices, hospitals, schools, airports, office towers, and mixed-use buildings.
- Project-based engineering support includes CAD/BIM files, shop drawings, and phased delivery.
Product Details
The DERCHI aluminum door for public buildings is a thermal break system that uses 6063-T5 aluminum profiles, polyamide thermal break strips, and multi-layer EPDM rubber seals. Standard glazing is 8mm+21A+8mm argon-filled double tempered insulating glass, with Low-E, laminated, and tinted glass options. This construction handles large entrance spans and frequent operation in public settings.
Unlike standard commercial aluminum entrance doors, this system is engineered to project specifications. Door schedules, elevations, hardware choices (including concealed wiring for access control and automatic openers), and performance values are confirmed before production. For the W-Z3 model, test data shows U-Factor 0.38, wind load resistance 5 kPa, water tightness 700 Pa, and sound insulation 35 dB; however, each project should validate performance with its own test reports based on final size and glass selection.
Product Features
Thermal Break Efficiency: Polyamide strips separate interior and exterior aluminum profiles, reducing heat transfer and condensation risk. This helps public buildings lower HVAC loads and meet energy codes without sacrificing entrance transparency.
High-Traffic Structural Integrity: Reinforced corner joints and thick 2.5–5.0 mm frame profiles absorb the stress of daily cycles. The door remains stable in busy lobbies, corridors, and terminal gates.
Intelligent Access Readiness: Door frames can be prepared with concealed wiring paths for card readers, biometric scanners, and electric strikes, and they integrate with automatic openers where touchless operation is required.
Multi-Point Security: A multi-point locking system with SS304 stainless steel handles secures the door at multiple points along the stile. Locking points resist forced entry while allowing panic egress where configured.
Daylight & Vision Optimization: Large glazing panels maximize natural light transmission, reducing reliance on artificial lighting in entrance halls. Optional Low-E and reflective coatings balance visibility with solar control.
Custom Finish Continuity: Powder coating, PVDF, or wood grain finishes are available in standard and custom RAL colors. Architects can align door appearance with window systems, curtain walls, and interior joinery.
Customizable Styles
Glass Options: Standard 8mm+21A+8mm argon-filled double tempered insulating glass; upgrade to Low-E, tinted, laminated, or triple insulating for improved thermal or acoustic control.
Frame Finishes: Powder coating, PVDF, and wood grain transfer in a wide RAL palette. Custom colors can be matched to project specifications.
Size Configuration: Width, height, and panel count are produced to match the door schedule. Oversized entrances and sidelite/transom combinations are engineered per project.
Opening Styles: Pivot, hinged, hidden hinge, and swing configurations available in single or double door arrangements. Opening direction determined by site conditions.
Structural Additions: Low thresholds, 10-inch bottom rails, sidelites, and transoms can be incorporated for accessibility, branding, or architectural continuity.
Hardware Accessories
Multi-Point Lock: Engages at multiple points with a single turn, increasing security. Compatible with panic hardware where required.
Handle Options: SS304 stainless steel lever handles with corrosion resistance; ADA-accessible lever styles available for inclusive design.
Sealing & Weatherstripping: Multi-layer EPDM gaskets create a tight barrier against wind-driven rain and drafts, maintaining interior comfort.
Buffer/Closer: Adjustable door closers or floor springs manage closing speed and backcheck. Can be specified with hold-open function for frequent traffic periods.
Smart Access Integration: Frames can be prepped for electric strikes, magnetic locks, fingerprint readers, keypads, and card swipe modules. Automatic door operators are optional.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | U-Factor 0.38 (W-Z3, dependent on glass) | Model- and glass-dependent; request project-specific thermal simulation. |
Wind Pressure Resistance | 5 kPa (W-Z3) | High-rise or coastal projects need local wind load verification and model-specific test report. |
Water Tightness | 700 Pa (W-Z3, lab conditions) | Large or non-standard thresholds may reduce performance; confirm per project. |
Air Tightness | 1.2 m³/(m·h) (W-Z3) | Depends on size, opening type, and hardware; request test data for exact configuration. |
Sound Insulation | 35 dB standard, up to 40 dB with laminated glass | For healthcare or education, specify required STC/OITC and request acoustic test reports. |
Product Specifications
Specification Item | Details |
|---|---|
Product Name | Aluminum Door For Public Buildings (DERCHI) |
Product Type | Thermal break aluminum commercial entrance door system |
Material | 6063-T5 aluminum alloy, polyamide thermal break, EPDM seals |
Glass Type (standard) | 8mm+21A+8mm argon-filled double tempered insulating |
Glass Thickness | 8mm per pane + 21mm air/argon gap |
Frame Thickness | 2.5–5.0 mm (leaf approx. 3.0 mm) |
Hardware | Multi-point lock, SS304 handles, optional smart lock, automatic opener ready |
Opening Style | Pivot, hinge, hidden hinge, swing; single/double |
Size Range | Custom to project door schedule; oversized entrances require engineering review |
Application | Public buildings: government, healthcare, education, transportation, commercial |
Customization | Glass, frame finish, hardware, access control, sidelites, transoms, thresholds |
Notes | Project-based production; no fixed stock. Lead time and warranty confirmed per model and project. |
Advantages
Project-Specific Engineering: Every door system is produced from project drawings, not standard catalog sizes, ensuring exact fit within structural openings.
High-Traffic Durability: Reinforced aluminum profiles and robust hardware selection withstand the rigorous use typical of lobbies, corridors, and entrance halls.
Thermal Performance: Polyamide thermal break and argon-filled insulating glass help meet energy code requirements while reducing condensation on large glazed facades.
Comprehensive Customization: From glass type to lock hardware and finish color, each detail can be adjusted to match architectural intent and operational needs.
B2B Export Readiness: Factory-direct supply with export crating, phased delivery options, and availability of CAD/BIM files. On-site installation training can be arranged.
Application Scenarios
Apartment: Multi-unit residential entrances benefit from secure multi-point locking and thermal break insulation, keeping lobbies comfortable and energy costs in check while managing tenant traffic.
Home Office: For shared or live-work spaces, the aluminum door provides a professional street presence with custom glass and finish options, while concealed wiring supports access control for business visitors.
Hotel: The system can create grand entryways with oversized glass panels and automatic openers, welcoming guests while maintaining acoustic comfort in busy lobby zones.
Office Building: Designed for daily high-traffic, the door frame and hardware resist wear in corporate lobbies, and thermal break glazing reduces HVAC demands across expansive glass entrances.
Outdoor: For semi-exposed building entrances, weather resistance depends on proper drainage, threshold details, and coating selection. Buyers should confirm wind-driven rain performance and salt-spray resistance if located near the coast.
Residential Building: Condominium and apartment tower entries require both security and accessibility; multi-point locks and optional low thresholds serve this well, though ADA compliance must be verified per local codes.
Exterior: As a primary building envelope component, the door must handle wind loads and water ingress. Performance values from the W-Z3 model need project-specific validation, particularly for oversized dimensions.
Villa: Private residences can adopt the same heavy-duty construction with customized wood-grain finishes and smart lock integration for a secure, elegant entrance.
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 door for public buildings?
It is a thermally broken aluminum entrance system built to order for high-traffic public environments like government buildings, hospitals, and schools. It is customized per project, not a stock item.
How is this system different from standard commercial doors?
Unlike off-the-shelf doors, each unit is engineered to project door schedules, with specified glass, hardware, and performance values. It can include concealed access control wiring and automatic opener integration.
Can the door be customized?
Yes, almost every aspect is adjustable: glass type, frame finish, size, opening style, sidelites, transoms, and thresholds. Custom RAL colors and wood grain finishes are available.
What information is needed for a quotation?
Provide a door schedule with elevations, dimensions, glass and hardware preferences, performance targets (wind, thermal), quantity, and destination. Drawings help the engineering team propose the right configuration.
What certifications are available?
DERCHI references NFRC, CE, AS2047, CSA, ISO9001, and others, but specific certification coverage must be verified per project model, size, and glass. Request model-specific documentation.
Is the door suitable for outdoor or exposed entrances?
It can be used for exterior entrances, but weather resistance depends on correct drainage, threshold design, and coating selection. Confirm wind-driven rain and salt-spray test data for coastal projects.
What is the typical lead time?
For the W-Z3 model, lead time is 25–35 days after drawing approval and deposit. Lead times for other models vary and are confirmed during project review.
