Modern windows are usually glazed or covered in transparent or translucent material. Most glazed windows may be opened, to allow ventilation; or closed, to exclude inclement weather. They are held in place by frames.
Types include fixed, single- and double-hung sash, horizontal sliding sash, casement, awning, hopper, tilt and slide (often door-sized) or tilt and turn windows.
Types of Window Finishes
The jalousie window; also known as a louvered window; consists of parallel slats of glass or acrylic that open and close like a Venetian blind, usually using a crank or a lever. They are used extensively in tropical architecture.
A sash window is the traditional style of window in the United Kingdom; and many other places that were formerly colonized by the UK; with two parts (sashes) that overlap slightly and slide up and down inside the frame. The two parts are not necessarily the same size.