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Windows are fixed to the wall openings in buildings for entry of daylight and the free circulation of air.

They consist of a frame which is fitted in the opening of the wall and small shutter frames of wood or glass attached to the frame by hinges.

Window Shutter Movements
Windows have different types of movements of shutters:

• Fixed Type - the framework is fixed and fitted with glass.

• Opening Outside - the shutters open outside a building.

• Opening Inside - the shutters open inside a building.

• Top-hinged - the shutter is hinged at the top of the frame, and it can be moved outside.

• Bottom-hinged - the shutter is hinged at the bottom and can be moved inside.

• Pivoted - the shutters are formed to rotate about a pivot that is fixed to the window frame. These can be rotated horizontally or vertically based on the position of the pivot adjusted to the frame.

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