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YXYT aluminum bifold windows feature a multi-sash design where adjacent sashes fold inward or outward along hinges, stacking compactly to create a wide, unobstructed opening. Composed of 2–6 interconnected sashes (depending on size), they are valued for maximizing ventilation and seamless indoor-outdoor integration—ideal for patios, kitchens, or commercial spaces (e.g., cafes, lobbies) where expansive openings are desired.
Bifold windows balance functionality and aesthetics: when closed, they maintain a sleek, unified appearance; when open, their folded sashes occupy minimal space, blurring the line between interior and exterior. Their robust hinge and tracking systems ensure smooth operation, even with larger sash configurations.
| Parameter Item | Standard Configuration | Premium Upgrade Configuration |
| Profile Material & Thickness | 6063-T5 aluminum alloy (frame 1.4mm/sash 2.0mm) | 6063-T6 aluminum alloy (frame 2.0mm/sash 2.8mm) |
| Thermal Conductivity | 3.3 W/m·K (with 12mm PA66 thermal barrier) | 2.9 W/m·K (with 14mm reinforced thermal barrier) |
| Wind Load Resistance | 3.0 kPa | 4.5 kPa |
| Water Tightness | ≤0.15 L/m²·h (compliant with ASTM E331) | ≤0.08 L/m²·h (compliant with ASTM E331) |
| Air Tightness | ≤0.3 m³/(h·m) (compliant with ASTM E283) | ≤0.15 m³/(h·m) (compliant with ASTM E283) |
| Maximum Overall Width | 4800mm (with 4 sashes) | 6000mm (with 6 sashes) |
| Single Sash Size
|
800mm × 2100mm | 1000mm × 2400mm |
Folding Direction:
Inward-folding: Sashes fold into the interior, suitable for exteriors with limited space (e.g., narrow patios).
Outward-folding: Sashes fold outward, maximizing indoor space—ideal for open-concept areas or commercial use.
Operation Principle: Adjacent sashes are connected by hinges, allowing them to pivot and stack when pushed or pulled. A track system guides the leading sash, ensuring alignment and smooth movement. Premium models include motorized controls for effortless operation of large configurations.
Ventilation & Access: When fully open, bifold windows can create openings covering 80–90% of the total width, enabling maximum airflow and unobstructed access (e.g., between a kitchen and outdoor dining area).
Safety Features: Anti-slam mechanisms slow folding speed to prevent pinching, while child-safe locks restrict opening range. Reinforced tracks and hinges prevent sash sagging over time, even with frequent use.
This design combines flexibility and grandeur, making bifold windows a standout choice for spaces where connectivity to the outdoors is a priority.
