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2. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   EURO 68 wooden window profile with insulated glazing. Insulating glass (IG) consists of two or more glass window panes separated by a space to reduce heat transfer across a part of the building envelope. A window with insulating glass is commonly known as double glazing or a double-paned window, triple glazing or a triple-paned window, or ...

3. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   Dielectric Breakdown Voltage. 40 MV/m. Polyvinyl chloride (alternatively: poly (vinyl chloride), [6][7] colloquial: vinyl[8] or polyvinyl; abbreviated: PVC[8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year.

4. VEKA - Wikipedia

   en.wikipedia.org/wiki/VEKA

   VEKA AG is a German extruder of uPVC profiles for use in windows, doors, roller shutters and sliding doors headquartered in Sendenhorst, Germany. [1] Founded in 1967 as a manufacturer of shutters, it currently operates its own extrusion facilities in twelve countries. [1][2][3] It also operates representative offices in more than forty ...

5. Window - Wikipedia

   en.wikipedia.org/wiki/Window

   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]

6. Sash window - Wikipedia

   en.wikipedia.org/wiki/Sash_window

   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.

7. Casement window - Wikipedia

   en.wikipedia.org/wiki/Casement_window

   A casement window is a window that is attached to its frame by one or more hinges at the side. [1] They are used singly or in pairs within a common frame, in which case they are hinged on the outside. Casement windows are often held open using a casement stay. Windows hinged at the top are referred to as awning windows, and ones hinged at the ...

8. Bay window - Wikipedia

   en.wikipedia.org/wiki/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 natural light ...

9. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a ...