The Coralife Aqualight 20 inch Quad Dual Linear Strip Compact Fluorescent Fixture is for reef aquariums. Please visit our Lighting Chart page to identify the best light for your particular reef aquarium. Dimensions: 20" X 7.25" X 2.5" without mounting legsNOTE: Do not put this light in a canopy. If you have a canopy you'll need a retrofit light.Includes:One 96 Watt Quad 50/50 (Actinic/10K) compact fluorescent lamp Easily removable acrylic lens coverTwo cooling fansHighly polished reflectorOn/off switchRecommended Accessories:Clear Mounting Legs or Adjustable Mounting Legs for Coralife Aqualight FixturesTo keep the light cycle consistent, we highly recommend using a timer.Replacement Parts:We carry all the replacement lamps and most replacement parts for the Coralife Aqualight fixtures