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  2. Troffer - Wikipedia

    en.wikipedia.org/wiki/Troffer

    A troffer is a rectangular light fixture that fits into a modular dropped ceiling grid (i.e. 2' by 2' or 2' by 4'). Troffer fixtures have typically been designed to accommodate standard fluorescent lamps (T12, T8, or T5), but are now often designed with integral LED sources. Troffers are typically recessed sitting above the ceiling grid, but ...

  3. Light fixture - Wikipedia

    en.wikipedia.org/wiki/Light_fixture

    Cove light – indirect lighting recessed into the ceiling in a long box against a wall. Troffer – recessed fluorescent light fixtures, usually rectangular in shape to fit into a drop ceiling grid. Chandeliers in the Bibliothèque Mazarine (Paris) Surface-mounted light – the finished housing is exposed, not flush with the surface.

  4. Recessed light - Wikipedia

    en.wikipedia.org/wiki/Recessed_light

    Different types of recessed lighting in a warehouse "Pot light" or "canister light" implies the hole is circular and the lighting fixture is cylindrical, like a pot or canister. There are three parts to a recessed lighting fixture: housing, trim and bulb. The trim is the visible portion of the light.

  5. Architectural lighting design - Wikipedia

    en.wikipedia.org/wiki/Architectural_lighting_design

    Track lighting fixture Individual fixtures (called track heads) can be positioned anywhere along the track, which provides electric power [8] Under-cabinet light Mounted below kitchen wall cabinets [citation needed] Troffer Recessed fluorescent light fixtures, usually rectangular in shape to fit into a drop ceiling grid [47] Wall grazing fixture

  6. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    R17d recessed double contact; One of the first diameters of fluorescent lamps, with the 15W T8 and 30W T8 having been introduced in 1938. [3] The European energy-saving krypton T8 lamps were introduced by Thorn EMI during the 1970s. [4] The North American energy-saving argon T8 lamps weren't introduced until the 1980s. [5] T9 T29 1 + 1 ⁄ 8: ...

  7. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    This increases current drawn by the lighting fixture. Fluorescent lamps require a ballast to stabilize the current through the lamp, and to provide the initial striking voltage required to start the arc discharge. Often one ballast is shared between two or more lamps. Electromagnetic ballasts can produce an audible humming or buzzing noise.

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