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Joseph W. Walker of Malden, Massachusetts, applied for a US patent for a basic louvered window in 1900.He was issued patent no. 687705 on November 26, 1901. [5] A popular hand-cranked glass, aluminum and screen window combination was later designed by American engineer Van Ellis Huff and found widespread use in temperate climates before the advent of air conditioning. [6]
A window sill may span the entire width of a wall from inside to outside, as is often the case in basic masonry construction, making it visible on both the interior and exterior of the building. In such a case, the exterior window sill and interior window sill would be two sides of the same structural element.
The posts are generally placed one tatami-length (about 1.82 metres (6.0 ft)) apart, and the shoji slide in two parallel wood-groove tracks between them. [8] In modern construction, the shoji often do not form the exterior surface of the building; they sit inside a sliding glass door or window. [5]
Modern louvers are often made of aluminum, metal, wood, or glass.They may be opened and closed with a metal lever, pulleys, or through motorized operators. [4]The Australian Standard specifies requirements for the construction of buildings using louver in bushfire-prone areas in order to improve their resistance to bushfire attack from burning embers, radiant heat, flame contact and ...