Windows play a very important role in every house. Windows are a successful source that provides good light and a good source of ventilation to every
complex of any constructed sights. There are many varieties of windows that are available in the market. While in olden days windows used to be small and that were just used as a small source for ventilation.
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But later windows were constructed as source for a good deal of sunlight inside the house. Before windows were constructed a opening with the wall that was constructed. But later lots of modification came in the window structures. Windows are usually constructed square in shape or rectangular but there are oval as well as round windows.
The panel of windows was constructed by carving of wood. Wooden panels were very
popular for windows. But the main product or the cover of the window is usually made up of glass. Glasses are used for windows because glass would transmit light through them as thus keep sunlight inside the house or office.
There are many types of double glazing windows available these days. Double glazed windows give double protection to the windows as well as they give double protection to the house.