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  2. Weatherstripping - Wikipedia

    en.wikipedia.org/wiki/Weatherstripping

    Weatherstripping around openings – especially doors and windows – is used in buildings to keep out weather, increase interior comfort, lower utility bills, [2] and reduce noise. Builder weatherstripping can be made from felt; [3] vinyl, rubber, or poly foam; [2] [3] EPDM cellular rubber and vinyl tubing; [4] and metals such as brass and ...

  3. Mantrap (access control) - Wikipedia

    en.wikipedia.org/wiki/Mantrap_(access_control)

    Entrance to HM Prison Edinburgh. A mantrap, security mantrap portal, airlock, sally port or access control vestibule is a physical security access control system comprising a small space with two sets of interlocking doors, such that the first set of doors must close before the second set opens.

  4. Transom (architecture) - Wikipedia

    en.wikipedia.org/wiki/Transom_(architecture)

    Transom or transom window is also the customary U.S. word used for a transom light, the window over this crosspiece. [ 1 ] [ 2 ] In Britain , the transom light is usually referred to as a fanlight , often with a semi-circular shape, especially when the window is segmented like the slats of a folding hand fan .

  5. GLARE - Wikipedia

    en.wikipedia.org/wiki/GLARE

    The number of aluminum layers is always one more than the number of glass fiber layers, and the aluminum layer thickness is in millimeters, which can range from 0.2 to 0.5 mm (0.0079 to 0.0197 in; 7.9 to 19.7 mils). (Glare1 can only consist of aluminum layers of 0.3 to 0.4 mm (0.012 to 0.016 in; 12 to 16 mils) thickness, though.)

  6. Aluminium oxynitride - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxynitride

    Aluminium oxynitride (marketed under the name ALON by Surmet Corporation [3]) is a transparent ceramic composed of aluminium, oxygen and nitrogen.Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet, visible, and mid-wave-infrared regions of the electromagnetic spectrum.

  7. Texas wants to buy surplus border wall parts but U.S ... - AOL

    www.aol.com/texas-wants-buy-surplus-border...

    Surplus border wall material headed for auction in Arizona was blocked by the U.S. government according to Texas officials.

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