49系列平开窗设计符合欧标, 三槽设计, 密封性优于普通型号。多样设计，内开平开、外平开、上悬、单扇开启、双扇开启、多扇开启皆可，而且还可配手摇百叶使用，颜色多样，大方美观。壁厚：1.4mm
玻璃：单玻/中空玻璃/手摇百叶
配件、附件：优质国产49 series windowEuropean stype three-groove. Versatile structure, able to be casement window, awning window, and rolling shutter window.
Common system                               
wall thickness: 1.4mm                        
Glass: single / double                            
Hardware: made in China, of good quality