平开窗:是一种传统的窗型,应用范围最广,分内开、外开两种。内开启便于擦窗,但开时占据室内空间,制作不当,雨天会向内渗水。向外开的窗扇防水性能好,开启时不占室内空间,但大风雨天易受损,对五金件强度要求较高。平开窗最大特点是密封性能好,窗扇能全部打开,便于通风,结构简单;缺点是五金件成本较高,价格较贵。 Flat-window: is a traditional window type, the widest range of applications, within the open, open two. Easy to open the window inside the open, but when open occupy the interior space, improper production, the rain will be infiltration. Outward sash waterproof performance is good, open does not account for the interior space, but vulnerable to wind and rain, the higher the strength of the hardware. The most prominent feature of the windows is the sealing performance, sash can be fully open, easy ventilation, simple structure; the disadvantage is the higher hardware costs, the price is more expensive.