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K5N
SUNGYE
The K5N series casement windows integrate a thermal break structure and double-glazed configuration, designed for residential buildings and commercial construction projects. Built with aluminum alloy profiles and multi-layer sealing systems, these windows adapt to varied climate conditions, from coastal high-humidity zones to dense urban high-rise environments. The series is manufactured under GB/T 7106-2019 standards, with tested metrics covering thermal insulation, air tightness, and water resistance.
Category | Parameter | Value |
|---|---|---|
Basic Profile | Model | K5N |
Brand | SUNGYE | |
Frame wall thickness | 1.8mm | |
Frame width | 60.5mm | |
Sash width | 80mm | |
Open sash width range | 450mm – 850mm | |
Open sash minimum height | ≥1450mm | |
Max sash weight | ≤70KG | |
Hardware brand | SUNGYE | |
Glazing Configuration | Glass setup | 5G+18A+5G |
Thermal & Performance | U-Factor (U.S. / 1-P) | 0.26 |
Solar Heat Gain Coefficient | 0.32 | |
Visible Transmittance | 0.53 | |
Condensation Resistance | 70 | |
Air Infiltration | 0.012 cfm/ft⊃2; | |
Water resistance rating | Class 6 | |
Air tightness rating | Class 8 | |
Design wind load | 500 Pa |
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The window frame uses aluminum alloy profiles with a 1.8mm wall thickness, paired with a PA66 GF25 thermal break strip in a multi-chamber structure. This design reduces heat transfer through the profile, supporting consistent indoor temperature levels. For coastal installations, a marine-grade anti-corrosion coating mitigates salt air erosion on exterior surfaces.
The window system reaches Class 6 water resistance and Class 8 air tightness per tested standards, with a 500 Pa design wind load corresponding to 177km/h wind velocity. Multi-layer EPDM seals along the sash-frame joint block outdoor dust and moisture ingress, while concealed exterior drainage channels direct accumulated water out of the frame.
The K5N series adopts a 5G+18A+5G double-glazed structure with an 18mm air gap between panes. The glass includes a Low-E coating that reduces infrared light transmission while maintaining a visible transmittance of 0.53, limiting indoor glare without reducing natural light intake.
This glazing configuration delivers a U-Factor of 0.26 and a Solar Heat Gain Coefficient of 0.32, reducing building heating and cooling loads. The system achieves a condensation resistance rating of 70, lowering the risk of internal condensation on interior glass under temperature differences, supporting reduced HVAC energy consumption for long-term commercial operation.
The integrated hidden drainage system channels water at 2 liters per minute, with sloped pathways to reduce debris accumulation and internal blockage. A gravity-driven chamber balances internal and external air pressure, preventing water suction during heavy wind-driven rain and reducing routine maintenance frequency.
The window supports both tilting and full inward opening via a single handle and pivot system, requiring minimal operating force. When fully opened, the 80mm wide sash rests against the interior wall, allowing safe access to exterior glass for cleaning. This design supports routine upkeep for high-rise buildings without external work platforms.
For coastal properties, the marine-grade anti-corrosion coating addresses salt air exposure, while Class 6 water resistance and 177km/h wind load capacity accommodate heavy rain and strong wind conditions, fitting residential development projects in coastal regions.
In high-rise urban structures, Class 8 air tightness reduces outdoor dust and noise ingress, while the thermal break structure lowers overall building energy use. The inward-opening design enables safe maintenance for elevated floors, suitable for commercial and residential high-rise projects.
Founded in 1997, Foshan SUNGYE Doors and Windows Co., Ltd. operates its main production facility in Foshan, China. All K5N series windows undergo operational cycle testing before delivery, and the company maintains regional warehouses in key markets for spare part dispatch. Structural hardware components carry a 10-year guarantee, while glass units have a 20-year warranty against fogging and internal seal failure. Custom color finishes are available to match project architectural requirements.
Structural hardware including hinges, locks and handles has a 10-year guarantee. Sealed glass units carry a 20-year warranty against internal fogging and seal failure.
The primary production facility is in Foshan City, China, handling all global custom fabrication and assembly orders.
Timelines vary by order volume and customization requirements. Standard production completes within several weeks, followed by arranged international shipping.
Yes, the factory provides a range of custom color finishes, with exterior coatings formulated to match specific architectural design requirements.
Clients are welcome to visit the Foshan manufacturing plant and showroom. Interested parties may contact the international service team to schedule a tour.
