Aqua Ultraviolet AAV00072 57-watt UV Sterilizer with Wiper for Aquarium, 2-Inch, Black 2 Inch Inlet and Outlet Comes Complete with Lamp Quartz Sleeve and Transformer Wiper Feature Cleans the Quartz Sleeve by Simply Pulling the Knob Designed for Indoor or Outdoor Use 21-7/8 Inch long x 3-3/4 Inch wide x 6 Inch high