Product Catalog
Featured Performance Door & Window Series
Explore our precision-engineered fenestration portfolio tested to global criteria including CE EN 14351-1, NFRC thermal metrics, and AS2047 structural load thresholds. Manufactured within our 180,000㎡ industrial complex for direct export to Greater Boston commercial and residential developments.
Fenestration Engineering Whitepaper
Engineering Aluminum Double Swing Doors for Boston & New England Microclimates
Specifying exterior fenestration systems for the Boston Metropolitan Area (Suffolk, Middlesex, and Norfolk counties) presents unique structural, thermal, and regulatory complexities. The local architecture balances stringent historical preservation guidelines with some of the strictest building energy stretch codes in North America.
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Thermal Bridge Interruption (IECC Zone 5A)
Boston's winter climate demands exceptionally low system U-factors to eliminate condensation and avoid interior thermal stratification. Our CE-certified double swing doors incorporate multi-chambered polyamide 6.6 structural thermal struts (reinforced with 25% glass fiber), providing complete separation between exterior and interior 6063-T6 aluminum extrusions. Combined with warm-edge composite spacers and argon-filled insulated glass units (IGUs), these systems achieve overall assembly U-factors as low as 0.22 BTU/(h·ft²·°F), exceeding Massachusetts Stretch Energy Code standards.
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Nor'easter Wind-Driven Rain Defense
Coastal New England weather profiles produce severe Nor'easter storm surges characterized by cyclonic winds and heavy precipitation. Traditional double swing systems frequently exhibit operational vulnerability along the center meeting stile (astragal). DERCHI engineers address this with interlocking dual-baffle astragal designs, co-extruded EPDM continuous perimeter gaskets, and concealed multi-point mechanical shoot-bolt locking mechanisms that uniformly compress door leaves across the entire vertical jamb, achieving up to 600 Pa water penetration resistance (EN 12208 Class 9A).
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Atmospheric Salt-Spray & De-Icing Resilience
Properties in coastal zones such as South Boston, East Boston, and the North Shore face ongoing exposure to airborne marine chlorides, compounded by municipal winter de-icing salts. Standard organic coatings deteriorate rapidly under such electrolytic stress. We apply AAMA 2604/2605 compliant PVDF fluoropolymer surface finishes and Qualicoat-certified marine-grade powder coatings exceeding 3,000 hours in neutral salt spray (ASTM B117) testing, preventing subsurface filiform oxidation and guaranteeing aesthetic longevity.
| Performance Vector | European (CE / EN Standard) | North American Benchmark | DERCHI Factory Output Specification |
|---|---|---|---|
| Air Permeability | EN 12207 Class 4 (600 Pa) | ASTM E283 ≤ 0.30 cfm/ft² | Class 4 / ≤ 0.08 cfm/ft² (High-Performance Commercial Air Infiltration Seal) |
| Watertightness | EN 12208 Class 9A (600 Pa) | ASTM E331 ≥ 10.0 psf (480 Pa) | Class E750 (750 Pa continuous static differential without perimeter leakage) |
| Structural Wind Load | EN 12210 Class C4/B4 | ASTM E330 Design Pressure 45–65 psf | Tested up to 3,600 Pa ultimate load resistance; certified for Boston coastal high-rises |
| Thermal Transmittance | EN ISO 10077-1 / EN ISO 10077-2 | NFRC 100 / IECC Climate Zone 5A | U-Factor: 0.22 - 0.26 BTU/(h·ft²·°F) [Equivalent Uw ≤ 1.30 W/m²K] |
| Acoustic Attenuation | EN ISO 717-1 Sound Reduction Rw | ASTM E90 / ASTM E413 (STC & OITC) | Rw 42 dB / STC 40 (Dual-laminated acoustic interlayer configurations) |
Architectural Typologies
Targeted Boston Architectural Applications
From Back Bay and Beacon Hill brownstone restorations to Seaport mixed-use developments and Cambridge lab facilities, our double swing door assemblies blend historical design aesthetics with contemporary industrial engineering.
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Seaport District Commercial & Retail Fronts
Boston's waterfront requires wide, ADA-compliant passage doors capable of withstanding heavy daily pedestrian traffic alongside harsh maritime weather. Our commercial double swing systems feature low-profile, thermally broken barrier-free thresholds, heavy-duty floor-concealed closer pivots rated for 1,000,000 cycles, and safety-laminated Low-E glazing that lowers HVAC operational costs for street-level retail and dining spaces.
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Brownstone & Historic Façade Restorations
Projects monitored by the Boston Landmarks Commission require careful architectural matching. We produce custom-extruded aluminum profiles that replicate historic timber sightlines, detailed raised mouldings, and architectural grilles (muntin bars). By concealing advanced multi-point security hardware and high-performance insulated thermal cores within classic styling, architects can meet historical standards without sacrificing energy targets.
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Suburban High-End Estates (Newton, Wellesley, Brookline)
For custom estate homes across Greater Boston, our outswing French-style double patio doors create wide openings to garden terraces and outdoor entertainment areas. Designed to accept heavy triple-glazed, argon-filled acoustic glass, these door units maintain interior quiet near urban transit corridors while delivering exceptional thermal comfort during cold Massachusetts winters.
Regulatory Evolution
Market Trends: Electrification, BERDO 2.0 & Passive House
Municipal regulatory frameworks across Massachusetts are driving the adoption of high-efficiency building envelopes. Fenestration systems now play a central role in mitigating operational carbon and avoiding non-compliance penalties.
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BERDO 2.0 Compliance
Boston's Building Emissions Reduction and Disclosure Ordinance mandates progressive decarbonization across commercial and large residential properties. Our high-performance door systems reduce building heating and cooling loads, helping property owners stay within emissions caps and avoid municipal fines.
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Passive House Standards (Phius)
Architects across Cambridge, Somerville, and Boston are adopting Phius envelope standards. Achieving whole-building air leakage below 0.050 CFM50 requires fenestration with multi-tiered compression gasketing and minimal thermal bridging across every perimeter joint.
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Access Control Integration
Modern luxury multi-family and commercial properties increasingly specify automated access control. Our swing systems integrate concealed European motorized multi-point locks, magnetic contact switches, and biometric access wiring through discreet internal extrusion pathways.
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Circularity & Embodied Carbon
Developers targeting LEED Platinum certifications prioritize products with low embodied carbon. DERCHI utilizes secondary billets containing high-percentage post-consumer recycled aluminum, manufactured using clean hydroelectric processing pathways with complete third-party EPD transparency.
Manufacturer Direct Advantages
Enterprise Manufacturing Strength: Guangdong Dejiyoupin (DERCHI)
With over 25 years of engineering experience and recognition as one of China's Top 10 door and window brands, we manufacture high-performance aluminum systems in our 180,000㎡ industrial complex in Foshan, Guangdong, shipping directly to global developers and contractors.
180,000㎡
Integrated Factory Footprint
600+
Skilled Craftspeople & Technicians
100+
International Patents & Testing Approvals
25+
Years Manufacturing Experience
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Pre-Construction Shop Drawings
Our dedicated structural and fenestration engineering teams provide comprehensive, parametric CAD shop drawings and BIM components for review by Boston project architects, structural consultants, and historical commissions. Every rough opening, anchoring detail, flashing integration, and mullion profile is approved prior to factory extrusion and fabrication.
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Global Certification Backing
All door profiles and glazed assemblies are supported by third-party testing reports. We maintain continuous certification under ISO 9001 quality management, CE mark validation (EN 14351-1), Australian AS 2047 standard protocols (passing the highest N6 structural category), and UL-certified fire door ratings for safe, compliant submittals.
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Heavy-Duty Ocean Export Crating
Shipping fenestration across oceans demands dependable protective packaging. Every DERCHI door unit is wrapped in multi-layer moisture-resistant plastic, foam-padded along all frame profiles, and secured in fully enclosed, fumigated solid timber export crates with internal steel-strapping to guarantee pristine arrival at the Port of Boston.
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Procurement Guidance
Frequently Asked Questions for Boston Contractors & Specifiers
Answers to common structural, thermal, logistical, and building code questions raised by New England general contractors, developers, and architects sourcing factory-direct fenestration.
Do DERCHI aluminum double swing doors comply with the Massachusetts State Building Code (780 CMR) and IECC requirements? +
Yes. Massachusetts enforces the 10th edition of 780 CMR (based on modern IBC/IRC and IECC provisions). Our thermally broken aluminum double swing systems can be customized to meet or exceed climate Zone 5A prescriptive envelope requirements. We supply verified thermal simulation reports and NFRC/CE compliant testing data demonstrating U-factors down to 0.22 BTU/(h·ft²·°F) and air leakage ratings well below the maximum allowable 0.30 cfm/ft² limit.
How does the factory resolve water penetration risks along the center astragal during coastal storms? +
Meeting stiles on double swing doors are historically susceptible to wind-driven water ingress. DERCHI utilizes an interlocking aluminum astragal system with multiple co-extruded EPDM continuous seal points. Integrated mechanical top-and-bottom shoot-bolts compress the secondary leaf firmly against the frame, while multi-point locks draw the active leaf into equal compression. Combined with our concealed water drainage channels and weep baffles, our assemblies prevent moisture penetration under high static and dynamic pressure differentials.
Can your factory supply custom finishes for historical district guidelines (e.g., Boston Landmarks Commission)? +
Yes. We regularly produce architectural solutions for historically sensitive environments. We offer custom extruded aluminum profiles with traditional sightlines, interior ogee stops, and exterior beveled profiles that replicate historic wood millwork. Furthermore, we provide color matching across all standard RAL tones, Duranar fluoropolymer coatings (AAMA 2605), and textured finishes designed to satisfy municipal historical reviews without compromising modern thermal break performance.
What are the lead times, and how is shipping handled to Boston-area job sites? +
Typical fabrication lead time is 4 to 6 weeks following sign-off on CAD shop drawings and glass specifications. Ocean freight transit from our factory through major South China ports directly to the Port of Boston (Conley Container Terminal) generally requires 30 to 40 days on the water. Doors are shipped in reinforced, heat-treated export crates. We coordinate door-to-door logistics, documentation, and customs clearance through licensed local freight partners.
What hardware configurations and accessibility options are supported on commercial swing leaves? +
Our commercial swing assemblies can be engineered to support full Americans with Disabilities Act (ADA) compliance, including maximum 1/2-inch beveled thresholds and required clear opening widths. We fit systems with high-grade multi-point locking handles, heavy-duty adjustable architectural hinges (tested to 200,000+ cycles), panic exit crash hardware, concealed overhead door closers, and electronic access strikes wired for automated card reader access.