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  2. Roller shutter - Wikipedia

    en.wikipedia.org/wiki/Roller_shutter

    Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open it and lowering it to close.

  3. Stage lighting accessories - Wikipedia

    en.wikipedia.org/wiki/Stage_lighting_accessories

    Barn doors, or occasionally a set of barn doors, are an attachment fitted to the front of a Fresnel lantern, a type of lantern used in films, television, and theatres. [1] The attachment has the appearance of a large set of barn doors, but in fact there are four leaves, two larger and widening on the outside, two smaller and getting narrower ...

  4. Louver - Wikipedia

    en.wikipedia.org/wiki/Louver

    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. [3]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 ...

  5. Window shutter hardware - Wikipedia

    en.wikipedia.org/wiki/Window_shutter_hardware

    Window shutters of house in village Casso, province of Pordenone, Friuli, Italy showing strap hinges (2018-12-08) Window shutter hardware, usually made of iron, are hinges and latches that attach to the shutter and a window frame (and in some cases directly attached to stone or brick). The hinges hold the shutter to the structure and allow the ...

  6. Window shutter - Wikipedia

    en.wikipedia.org/wiki/Window_shutter

    Composite shutters offer advantages over wood shutters such as resistance to twisting, splitting, and rotting. However, PVC shutters are often hinged with three or more hinges and painted with vinyl-safe paint to keep from bowing in the sun and can require additional hardware. Fiberglass shutters are more dimensionally stable than PVC.

  7. Stage lighting instrument - Wikipedia

    en.wikipedia.org/wiki/Stage_lighting_instrument

    The original shape of the beam is round, but with the use of the shutters one can limit the beam to avoid obstacles or parts of the set that should not be illuminated in a specific look. Another feature is a gate, also in the focal plane, for sliding in gobos (also known as templates or deckles). These have patterns cut into them, like a stencil.

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