The PVC Single Hung Window from Xiamen KDSBuilding combines traditional design with modern innovation to create a window that is both functional and visually appealing. Featuring a vertically sliding lower sash and a fixed upper sash, this design offers smooth operation, efficient ventilation, and enhanced energy performance. Constructed from high-quality PVC profiles, the window provides excellent resistance to corrosion, moisture, and UV radiation, making it durable and low-maintenance in any climate. The double-glazed glass and multi-chamber frame design deliver superior insulation, helping to reduce heat transfer and noise infiltration while maintaining comfortable indoor temperatures year-round. Equipped with secure locking mechanisms and airtight sealing, it effectively prevents water and air leakage, ensuring lasting performance and safety. Its clean lines and timeless proportions make it suitable for a wide range of architectural styles, from modern apartments to classic homes. Certified by NFRC and CE, KDSBuilding’s PVC Single Hung Window meets international standards for quality, efficiency, and durability. With easy cleaning, elegant appearance, and reliable functionality, it is an excellent choice for homeowners and builders seeking a cost-effective, energy-efficient, and aesthetically pleasing window solution.

This elegant PVC window features a distinctive arched top design combined with a practical vertical sliding sash system, making it a perfect balance of architectural aesthetics and modern functionality. Manufactured using high-quality PVC profiles, it offers superior durability, weather resistance, and excellent thermal insulation performance. Unlike traditional wood windows, this PVC design is maintenance-free, resistant to moisture, corrosion, and warping—ensuring a long service life even in harsh climates. The upper arched fixed glass panel allows abundant natural light to enter while adding a stylish visual appeal, making it ideal for both residential and commercial applications. The lower operable sash ensures smooth vertical sliding with secure locking hardware, providing reliable ventilation and user convenience. The double-glazed glass option enhances energy efficiency by reducing heat transfer and noise, meeting high-performance building standards. This window is suitable for classic villas, modern homes, hotels, and architectural projects where both performance and appearance matter. With customizable colors, glass options, and hardware selections, it can be tailored to complement any design style. This PVC arched sliding window truly reflects a combination of beauty, performance, and practicality—an ideal upgrade for energy-saving and elegant building fenestration solutions.

Aluminum single hung windows are a sleek and practical window solution known for their strength, durability, and modern appearance. In this design, the bottom sash slides vertically while the top sash remains fixed, offering controlled ventilation and a secure closure. The lightweight yet strong aluminum frame resists rust, corrosion, and warping, making it ideal for both residential and commercial buildings. With minimal maintenance and excellent thermal performance when paired with insulated glass, these windows offer long-term energy efficiency. Their clean lines and customizable finishes complement contemporary architectural styles, delivering both functionality and aesthetic appeal in a space-saving design

double hung windows are a common type of indoor door and window products. They have excellent energy-saving and heat-insulating, dust-proof and noise-reducing, and excellent wind pressure resistance. They have beautiful lines and a wide viewing angle. They will not collide with the human body when opened. The frame and sash are wrapped, so there is no risk of the sash falling outwards. They have excellent safety coefficients and many other advantages. They are widely used in high-rise buildings in North America.

Advantages of sliding windows Exquisite facade, reasonable opening and ventilation methods Traditional European sliding windows open left and right, while sliding windows open vertically up and down. Normally, whether it is a sliding window or a sliding window, the opening area will not exceed 1/2, but after changing from sliding left and right to lifting up and down, not only is the opening method more scientific and reasonable, but the human comfort is also greatly improved. Because, in my country's building openings, the height from the ground is generally 900-1000mm. If the height of the sliding window is designed to be 1600-1800mm, the opening height of 1/2 is 800-900mm, which is close to the height of the human body, and the ventilation and comfort are greatly enhanced.

The upper and lower sliding windows have more design flexibility in the slenderness ratio of height to width, and the facade appears beautiful and light. The upper and lower window sashes can be divided by different lines. The window frame is simple and the lines are delicate. Ventilation and lighting are equally important without visual obstruction. The upper and lower window sashes can be adjusted according to the ventilation needs. Because they are not casement or sliding, the setting of screens is also relatively easy, and it is also easy to escape in an emergency. If designed as a continuous lifting window, you can fully enjoy natural ventilation. It is another choice for designers between casement windows and sliding windows.

Aluminium single hung window with white color Customized RAL colour is available With thermal break good insulation. With stainless screen Double glass good energy saving and  Noise proof Smooth vertical sliding panel eash opening

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