Rubber strip has been used in recent years, EPDM, which can ensure better elasticity and anti-aging performance, but the glass groove rainwater with rubber strip will still leak into it, so we need to milling drainage holes and slots.

The water tightness of aluminum window is related to the strength of aluminum alloy door and window members, rubber strip section and material, drainage system, window structure design, etc.

KDS supply aluminum folding door 38. Designed for large openings, aluminum folding doors offer outstanding flexibility and space-saving performance. Reinforced aluminum profiles support large glass panels, while high-quality rollers ensure smooth and quiet operation. Ideal for patios, balconies, and commercial entrances, the door system enhances ventilation, natural light, and architectural style. series: 73 series thermal break opening style: folding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

KDS supply aluminum folding door 37. Xiamen KDSBuilding aluminum folding doors deliver a perfect balance of strength and elegance. The multi-panel folding design allows maximum opening area, while strong hinges and locking systems provide safety and stability. Optional thermal break profiles and Low-E glass improve insulation and comfort for modern buildings. series: 80 series thermal break opening style: folding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

KDS supply aluminum folding door 28. Aluminum folding doors from KDSBuilding create expansive openings without compromising stability or security. The precision-engineered folding system allows easy stacking of panels, while multi-point locking enhances safety. This door solution is ideal for patios, terraces, and large living spaces seeking openness and flexibility. series: 80 series thermal break opening style: folding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

Aluminum factory sliding door as what it means , this is factory direct sale, we seriously control the quality and give you a competitive price. Aluminum sliding doors are designed to maximize space efficiency while providing a modern and elegant appearance. Made from high-strength aluminum profiles, they offer excellent durability, corrosion resistance, and smooth sliding performance. Large glass panels allow abundant natural light, making them ideal for residential and commercial applications such as balconies, patios, and living rooms. series: 60 series thermal break opening style: sliding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

KDSBUILDING supply factory direct sale aluminum awning window 012. Aluminum awning windows are widely used due to their strong structure and excellent sealing performance. The top-hinged design ensures smooth airflow and improved indoor air quality. Aluminum profiles provide durability, resistance to corrosion, and compatibility with various glass configurations for enhanced thermal performance. series: 55 series thermal break opening style: Awning Glass: 5mm+9A+5mm clear tempered glass Color: white Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

One frame type for double hung windows：6063-T5  aluminum profile,Thermal Break. Designed for comfort and efficiency, aluminum double hung windows provide excellent ventilation and natural light. When paired with double or insulated glazing, they help improve thermal and sound insulation while maintaining the strength of aluminum profiles. 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