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A double-hung window where the upper sash is smaller (shorter) than the lower is termed a cottage window. [citation needed] A single-hung window has two sashes, but normally the top sash is fixed and only the bottom sash slides. Triple- and quadruple-hung windows are used for tall openings, common in New England churches.
The Pella Corporation is a privately held window and door manufacturing company headquartered in Pella, Iowa, and with manufacturing and sales operations in a number of locations in the United States. The company was founded in 1925 when Peter Kuyper and his wife Lucille invested $5,000 to buy the Rolscreen Company, a small business that had ...
Cottage windows are visible in this view of a bungalow -style house dating to 1921. A cottage window is a double-hung window — i.e., a window with two sashes sliding up and down, hung with one atop the other in the same frame — in which the upper sash is smaller (shorter) than the lower one. The upper sash often contains smaller lights ...
A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and may also allow the passage of sound and sometimes air.Modern windows are usually glazed or covered in some other transparent or translucent material, a sash set in a frame [1] in the opening; the sash and frame are also referred to as a window. [2]
A typical installation of insulated glass windows with uPVC frames. Fitting a second pane of glass to improve insulation began in Scotland, Germany, and Switzerland in the 1870s. [2] Insulating glass is an evolution from older technologies known as double-hung windows and storm windows.
Bay window. A bay window is a window space projecting outward from the main walls of a building and forming a bay in a room. It typically consists of a central windowpane, called a fixed sash, flanked by two or more smaller windows, known as casement or double-hung windows. The arrangement creates a panoramic view of the outside, allows more ...
Window insulation. Window insulation reduces heat transfer from one side of a window to the other. The U-value is used to refer to the amount of heat that can pass through a window, called thermal transmittance, with a lower score being better. [ 1] The U-factor of a window can often be found on the rating label of the window.
Window screen. A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass, plastic wire, or other pieces of plastic and stretched in a frame of wood or metal. It serves to keep leaves, debris, bugs, birds ...