Emperor Aquatics Ultraviolet Light w/ 2" diameter housing. This is a great product. The 2" diameter body - known as the SmartUV-Lite Series. May come with either 2" slip (socket) OR with union 1-1/2" slip Ports - PLEASE SPECIFIY WHICH YOU NEED. Call us to help you decide. Please note which Ultraviolet Light and or Replacement Parts you are looking for. Please be sure you are ordering what you want - please call us if you have questions. 02218-2$249.99 Questions? Comments? koilagoon@gmail.com Or give us a call 9am - 5pm MST (970) 484 - 9162