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2. 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]

3. Sliding glass door - Wikipedia

   en.wikipedia.org/wiki/Sliding_glass_door

   Sliding glass door frames are often made from wood, aluminum, stainless steel, or steel, which also have the most strength. The most common material is PVC plastic. Replacement parts are most commonly needed for the moving-sliding parts of the door, such as the steel rollers that glide within the track and the locking mechanisms.

4. Jalousie window - Wikipedia

   en.wikipedia.org/wiki/Jalousie_window

   A jalousie window (UK: / ˈ dʒ æ l ʊ z iː /, US: / ˈ dʒ æ l ə s iː /), louvred window (Australia, New Zealand, Pacific Islands, Southeast Asia, United Kingdom), jalousie, or jalosy [1] is a window composed of parallel glass, acrylic, or wooden louvres set in a frame. The louvres are joined onto a track so that they may be tilted open ...

5. Low emissivity - Wikipedia

   en.wikipedia.org/wiki/Low_emissivity

   Conversely, a low-e material such as aluminum foil has a thermal emissivity/absorptance value of 0.03 and as an opaque material, the thermal reflectance value must be 1.0 - 0.03 =0.97, meaning it reflects 97 percent of radiant thermal energy. Low-emissivity building materials include window glass manufactured with metal-oxide coatings as well ...

6. Technal - Wikipedia

   en.wikipedia.org/wiki/Technal

   Technal is a brand of Norsk Hydro, the Norwegian group whose business focuses on aluminium extrusions. [1] Part of Hydro's Building Systems division, Technal is present in Europe, Latin America, South Africa. [2] It is engaged in the development, manufacturing and marketing of aluminum glazing systems for commercial, public and residential ...

7. 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.