POLYVINYL CHLORIDE (PVC) WINDOWS:

What a plastic window consists of
The structure consists of the following elements:

The frame and the sash. A metal and plastic profile is used for its manufacture, consisting of an inner reinforcement and several air chambers (three, four, five). The frame is the frame of the window construction, and the sash is its movable working part, connected to it by fittings.

The double-glazed window ensures the entry of natural light into the room and occupies 85% of the total window area. It may consist of two or three panes of different types of glass, separated by a gap and hermetically welded together.

Hardware. This is the mechanism responsible for opening and closing the window, the tightness of the sash to the frame. It can be pivoting, tilting or combined.