Engineered with high-grade thermal break profiles, constant-force balance technology, and international AS2047 & CE certification for architects, project developers, and building material importers worldwide.
Precision Double Hung Aluminum Windows Built to Your Drawings
Delivering structural stability, hurricane impact resistance, and low U-values across multi-family and luxury residential facades.
In global architectural supply chains, procuring double hung aluminum windows requires navigating stringent energy standards, wind-load parameters, and hardware reliability. Located in Foshan, Guangdong—China’s premier aluminum manufacturing epicenter—Window Wurx Industry Co., Ltd. blends over 30 years of metallurgy mastery with modern automation to produce premium sash fenestration solutions.
Our double hung aluminum windows undergo third-party laboratory testing for water tightness, air infiltration, structural deflection, and acoustic attenuation. Verified compliance with AS2047 (Australia/NZ), CE (Europe), and NFRC (North America) ensures seamless building code approval.
Spanning a modern 20,000 m² production workshop powered by 150+ master technicians and 3 automated assembly lines, our facility handles complex multi-story commercial orders and high-end villa projects with consistently high output, growing 30% year-on-year.
Founded in 1993, Window Wurx Industry Co., Ltd. possesses deep metallurgical expertise in 6063-T5/T6 architectural aluminum alloy profiles, precision CNC milling, continuous anodizing, and multi-point balance hardware calibration that guarantees effortless vertical sash sliding.
Double hung aluminum windows feature two vertically operating sashes (top and bottom) housed in a single perimeter frame. By providing superior natural ventilation control through top-and-bottom convection currents, these windows eliminate external projection risks, making them ideal for walkways, multi-story facades, and contemporary interior layouts.
Our flagship high-performance double hung aluminum window designed for cold climates and severe weather envelopes. Utilizes 24mm PA66 glass-reinforced polyamide thermal breaks to isolate thermal energy transfer.
Engineered specifically for coastal, hurricane-prone regions requiring extreme wind pressure tolerance and debris impact resistance. Features heavy wall extrusions up to 2.2mm thickness.
Designed for historical restoration, modern urban apartments, and boutique commercial facades seeking narrow sightlines with vintage aesthetics and modern aluminum durability.
What differentiates a standard aluminum window from an export-grade double hung aluminum window system manufactured by Window Wurx Industry Co., Ltd.? Below is an engineer's perspective on profile geometry, balance hardware, and surface treatment.
Overcoming aluminum's natural thermal conductivity through precision structural separation.
Standard aluminum frames act as thermal bridges, conducting heat energy into conditioned interiors during summer and losing heat in winter. Window Wurx Industry Co., Ltd. incorporates high-density PA66 GF25 (polyamide reinforced with 25% glass fiber) thermal break strips within our double hung aluminum window frames.
This design splits the inner and outer aluminum extrusions, dramatically lowering overall heat transfer coefficient (U-Factor), mitigating interior condensation risks, and ensuring compliance with stringent Green Building Energy Codes.
Effortless vertical operation regardless of glass unit weight.
The single greatest point of failure in low-quality double hung windows is sash balance degradation leading to sticky sashes, sash drift, or dangerous dropping. Window Wurx utilizes heavy-duty stainless steel constant force coil balances and precision block-and-tackle hardware systems calibrated to the exact weight of each insulated glass unit.
Whether operating a compact 12 kg sash or an oversized 100 kg triple-glazed commercial sash, users experience smooth finger-tip elevation, positive latching, and zero sash sag over decades of heavy daily operation.
Protecting precision frame geometry and hardware alignment during ocean shipping.
Maritime transport exposes aluminum cargo to salt air, humidity, container floor vibration, and heavy stacking forces. Window Wurx Industry Co., Ltd. employs a standardized 5-layer export packaging system for every double hung window assembly.
Each unit is wrapped in protective adhesive film, fitted with shock-absorbing corner protectors, encased in bubble wrap, bundled with corrugated side panels, and secured inside fumigation-free solid wooden crates. This engineering rigor guarantees zero frame racking or powder coat abrasion upon job site arrival.
As global architectural design shifts toward net-zero carbon buildings, smart home integration, and adaptive reuse, double hung aluminum windows are undergoing rapid technical evolution. B2B procurement managers and architectural buyers must align specifications with these upcoming industry benchmarks.
Energy codes across North America, Australia, and Northern Europe are tightening thermal transmittance thresholds. Future double hung aluminum window orders are transitioning from standard double glazing (Igus 6mm+12Ar+6mm) to triple-insulated units with double Low-E soft coatings and Warm-Edge spacer technology.
Window Wurx incorporates warm-edge polymer spacers and argon gas filling to achieve overall window U-factors below 0.24, satisfying Passive House standards for vertical sash systems.
Modern commercial buildings and high-end residences increasingly require automated natural ventilation. The integration of motorized rack-and-pinion actuators concealed inside the aluminum jamb allows double hung sashes to be operated via smartphone apps, building management systems (BMS), or rain/air quality sensors.
Automated sash control creates optimal natural stack ventilation, exhausting hot air through the top sash while pulling cool air through the lower sash.
Coastal developments face severe atmospheric salt spray and UV degradation. Future procurement trends show a strong preference for 70% Kynar 500 PVDF (fluorocarbon) coatings and heavy-micron hard-anodizing rather than basic liquid paint.
Window Wurx offers dual-color thermal breaking—enabling architectural dark bronze PVDF on the exterior face and warm interior timber woodgrain powder coat indoors.
Combining traditional vertical sash elegance with modern 6063-T5 aluminum thermal performance and zero-drift spring hydraulics.
Window Wurx Industry Co., Ltd. collaborates directly with real estate developers, window importers, general contractors, and architectural design firms across North America, Australia, Europe, and the Middle East.
Our flexible OEM/ODM dealer program eliminates costly middleman margins, offering direct factory pricing, shop drawing engineering, and dedicated project management assistance.
We streamline international sourcing through transparent engineering milestones, guaranteeing that shop drawings match project blueprints down to the millimeter.
Submit project schedules, CAD elevations, or wind-load specs to [email protected]. Our engineering desk conducts initial structural feasibility reviews.
We issue 2D/3D shop drawings detailing profile cross-sections, thermal break positions, glass build-ups, balance load calculations, and anchoring flanges.
Extrusions undergo automatic double-miter cutting, corner crimping, PA66 thermal insertion, and surface coating on our 3 automated production lines.
Every double hung sash undergoes balance tension testing, tilt latch verification, air/water pressure chamber inspection, and surface micron depth checks.
Addressing core technical considerations, structural load parameters, hardware longevities, and international certification standards before placing custom production orders.
Double hung aluminum windows feature two vertically sliding sashes that operate independently, providing superior natural ventilation control by opening both top and bottom sashes simultaneously to harness convection cooling (hot air escapes top, cool air enters bottom). Engineered with modern PA66 thermal breaks and heavy-duty EPDM multi-weatherstripping, Window Wurx double hung systems achieve air infiltration ratings under 0.1 CFM/ft² and structural load compliance up to DP60 (Design Pressure 60 PSF), matching high-end casement performance while eliminating exterior sash projection hazards.
We integrate top-grade constant force coil spring balance systems and heavy-duty block-and-tackle balances rated for sashes up to 120 kg (264 lbs). These balances ensure smooth finger-tip operation, zero sash drift, and over 20,000 continuous cycle tests without tension loss. We also offer concealed tilt-in latches for effortless interior maintenance and exterior glass cleaning.
Yes. Our double hung aluminum window line is tested and fully certified under AS2047 (Australia/NZ) and CE (Europe), with NFRC thermal performance profiles yielding U-factors as low as 0.28 BTU/h·ft²·°F (1.6 W/m²K) when equipped with low-E insulated glass units and argon gas filling. Impact-resistant laminated options (PVB/SGP) are also customized for cyclone and high-wind coastal regions.
Absolutely. Through our advanced dual-extrusion thermal break process, Window Wurx Industry Co., Ltd. offers custom two-tone finishes—allowing developers to specify dark bronze, architectural black, or anodized silver for exterior building facades while matching interior woodgrain or soft white interior color schemes.
Production lead time generally ranges from 25 to 35 days following shop drawing approval. All windows undergo our rigorous 5-layer export protective wrapping—including protective film, edge protectors, bubble wrap, corner guards, and heavy-duty fumigation-free wooden crates—ensuring zero transit damage during sea freight to North America, Europe, Australia, and the Middle East.
Simply click our instant catalog button or email [email protected] with your project dimensions. Our engineering team provides full architectural submittal packages including DWG files, test reports, and physical profile corner samples delivered by international air express.
Contact our engineering specialists today at [email protected] for factory-direct quotes, DWG CAD details, and technical submittal files.