The PVC Double Hung Window from Xiamen KDSBuilding is designed to provide versatility, comfort, and durability in one elegant package. Both the upper and lower sashes can slide vertically, allowing flexible ventilation options while maintaining excellent energy performance. Crafted from premium PVC profiles, this window offers exceptional resistance to corrosion, fading, and weathering, ensuring long-term durability with minimal maintenance. The double-glazed glass and multi-chamber frame design deliver outstanding thermal insulation and sound reduction. series: 82 series PVC opening style: Double Hung Glass: 3mm+12A+3mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.21 Visible Transmittance: 0.41 Air Leakage: 0.15

The PVC Casement Door (White Color Profile) from Xiamen KDSBuilding combines timeless elegance with advanced performance, making it a perfect addition to contemporary and traditional spaces alike. Crafted from high-quality white PVC profiles, this door offers a clean, bright appearance that complements any interior or exterior setting. Its robust frame structure and multi-chamber design provide excellent insulation, reducing energy loss and maintaining comfortable indoor temperatures throughout the year. The door features precision-engineered hinges that allow smooth outward or inward opening, ensuring easy operation and maximum ventilation. The double-glazed glass enhances soundproofing and thermal efficiency while providing clear visibility and natural light.  series: 60 series PVC opening style: Casement (Swing) Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047, Energy Stay U-Factor  ≤ 0.3 SHGC ≤ 0.21 Visible Transmittance: 0.41 Air Leakage: 0.15

The PVC Top Sliding + Bottom Fixed Window from Xiamen KDSBuilding offers a perfect balance between functionality, visibility, and energy efficiency. This unique dual-structure design features a top sliding sash for ventilation and a bottom fixed panel for unobstructed outdoor views and enhanced insulation. Crafted from premium PVC profiles, the window provides outstanding durability, corrosion resistance, and weatherproof performance. The top sliding sash glides smoothly on high-quality rollers, ensuring easy operation without occupying interior or exterior space. The bottom fixed section, fitted with double-glazed glass, enhances energy savings and noise reduction。 series: 80 series PVC opening style: Top sliding and bottom fixed Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Sliding Window from Xiamen KDSBuilding combines elegant design with superior performance, making it an ideal choice for modern homes, apartments, and commercial spaces. Engineered with high-quality PVC profiles, this window offers excellent durability, weather resistance, and energy efficiency. Its horizontal sliding mechanism allows smooth and effortless operation, saving space while providing excellent ventilation and wide views. The multi-chamber PVC frame and double-glazed glass work together to enhance thermal and sound insulation, ensuring a quiet and comfortable indoor environment while reducing energy costs. The airtight sealing design prevents water and dust intrusion, even under extreme weather conditions. series: 80 series PVC opening style: sliding Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Fixed Window from Xiamen KDSBuilding is an excellent solution for homeowners and builders seeking maximum light, energy efficiency, and modern simplicity. Designed without any operable parts, this fixed window provides an expansive and uninterrupted view while ensuring outstanding insulation performance. Made from high-grade PVC profiles, the frame resists moisture, corrosion, and UV damage, making it ideal for both residential and commercial applications. The double-glazed glass units enhance thermal insulation, keeping interiors comfortable year-round and significantly reducing energy costs.  series: 80 series PVC opening style:  fixed( non opening) Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Casement Door is a perfect combination of modern aesthetics and high performance, making it an ideal choice for both residential and commercial spaces. Crafted from premium PVC profiles, this door offers exceptional durability, weather resistance, and low maintenance requirements. The casement design allows the door to open outward or inward with ease, providing excellent ventilation and a wide opening for natural light. Its multi-point locking system enhances security, while the double-glazed glass option ensures outstanding thermal and sound insulation, reducing energy costs and maintaining indoor comfort.  series: 60 series PVC opening style:  Casement(Swing) Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The Aluminum Double Hung and Tilt Window from Xiamen KDSBuilding combines elegant design, smooth functionality, and outstanding thermal performance for modern residential and commercial projects. Manufactured with high-quality thermal break aluminum profiles and double-glazed insulated glass units, this window ensures excellent energy efficiency, sound insulation, and condensation resistance. The double-hung mechanism allows both the upper and lower sashes to slide vertically for flexible ventilation, while the tilt function provides easy inward tilting for convenient cleaning and secure airflow control.  series: 83 series thermal break opening style: Double Hung and Inward Tilt Glass: 5mm+9A+5mm clear tempered glass Color: white Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

PVC casement doors are a perfect blend of style, functionality, and durability, making them an ideal choice for modern residential and commercial spaces. Constructed from high-quality PVC profiles, these doors are resistant to warping, corrosion, and weather-related damage, ensuring long-lasting performance with minimal maintenance. The casement design, which allows the door to swing open fully, provides excellent ventilation and natural light, enhancing the comfort and aesthetics of any space. series: 60 series PVC opening style:  Casement(Swing) Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

Our PVC Sliding Window with Bottom Fixed Panel combines durability, security, and modern aesthetics for residential and commercial spaces. The sliding top panel ensures smooth operation and easy ventilation, while the fixed bottom panel provides stability and enhanced insulation. Made from high-quality PVC profiles, this window is resistant to weather, corrosion, and fading, requiring minimal maintenance. Its energy-efficient design helps reduce heating and cooling costs, making it a smart choice for contemporary buildings. series: 80 series PVC opening style: sliding and Fixed Color: Black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23