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 41. KDSBuilding aluminum folding doors combine sleek aluminum frames with advanced folding mechanisms to maximize opening width. The door panels glide and fold effortlessly, offering seamless indoor–outdoor connection. With double-glazed glass and reliable sealing, the system ensures stability, energy efficiency, and long-term performance. 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 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

This product is smooth and shiny, it has large sash frame Aluminum casement doors provide a practical and stylish solution for both interior and exterior openings. The strong aluminum profile supports large glass panels without deformation. Easy operation, excellent ventilation, and low maintenance make this door type a popular choice for residential and light commercial applications. series: 100 series thermal break opening style: Casement 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