troffer (plural troffers)

  1. A rectangular, trough-shaped light fixture, typically for mounting in or on a ceiling to light the area below, and usually containing two or three fluorescent bulbs.[1]
    Each fluorescent troffer in the room contained three lamps and two ballasts. [2]
    • 1956, National Research Council, Design for environment: floor, ceilings, and service systems in multi-story buildings[3]], page 36:
      Flexibility for troffer systems may be planned in the original layout by coordinating the over-all ceiling pattern with the modular size of troffer.


  1. ^ “troffer”, in[1], accessed November 10, 2012
  2. ^ “The LED Show conference spanned components to lighting design”, in (Please provide the title of the work)[2], October 2012, retrieved November 10, 2012