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2. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   Fitting a second pane of glass to improve insulation began in Scotland, Germany, and Switzerland in the 1870s. [3] Insulating glass is an evolution from older technologies known as double-hung windows and storm windows. Traditional double-hung windows used a single pane of glass to separate the interior and exterior spaces.

3. Glazing (window) - Wikipedia

   en.wikipedia.org/wiki/Glazing_(window)

   The ideal gap size varies by location, but on average it ranges from 15-18 mm thick, giving a final assembly size of 23-26 mm assuming a typical glazing thickness of 4 mm. [9] A double-paned window with air in the gap has an R-value of 2.1, which is much better than the 0.9 that a single pane of glass yields. A triple-paned window, which is not ...

4. Window - Wikipedia

   en.wikipedia.org/wiki/Window

   The panes of glass are separated, creating an insulating air pocket that inhibits heat transfer much better than single pane windows. Double-paned windows have two parallel panes (slabs of glass) with a separation of typically about 1 cm; this space is permanently sealed and filled at the time of manufacture with dry air or other dry ...

5. Sash window - Wikipedia

   en.wikipedia.org/wiki/Sash_window

   Modern double-glazed sash windows are available. These may have true muntins or "glazing bars", or may imitate them by applying them to the surface of the glazing, giving the appearance of multiple small panes, whereas each sash consists of only one large double-glazed unit. [citation needed]

6. Laminated glass - Wikipedia

   en.wikipedia.org/wiki/Laminated_glass

   Laminated glass is also used to increase the sound insulation rating of a window, because it significantly improves sound attenuation compared to monolithic glass panes of the same thickness. The interlayer is typically of polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA), ionoplast polymers, cast in place (CIP) liquid resin, or ...

7. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

   www.aol.com/products/utilities/ad-free-mail

   SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...