There are many types of windows styles. One key differentiator to be aware of when deciding on a window is whether it is operational or not. Operational windows are windows that can open or close, either using a crank, like with a casement or awning window, or a sliding sash, like with a slider, single-hung, or double-hung window. Operational windows have the advantage of providing a room with ventilation. Non-operational windows, like picture, or fixed windows, are recommended for spaces where a view is desired but no ventilation is required.
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