The vertical casement window features a vertical isothermal design in its window frame, offering superior thermal insulation performance compared to out-swinging windows. It is particularly suitable for regions with significant temperature variations due to its excellent thermal retention properties. The in-swinging casement window that sits flush with both interior and exterior walls provides a more expansive field of view. Vertical casement window adopts tempered ultra-clear glass (5mm + 27A + 5mm) with dual-layer sound insulation and thermal insulation, offering superior sealing performance. The large air gap design (27mm) effectively blocks heat generated by light refraction while delivering exceptional noise reduction capabilities
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