Designed by Tullio Dell Aquila, the XHO LED‘s have the highest output of any product in their class. Experience Xtreme performance at an affordable price. Mix multiple units to create your own Xtreme High Output Led lighting system. Stylish black anodized housing, high performance reflector system, and assembled in the U.S.A. XHO LED‘s are the professional’s choice. *Compatible with Apex when paired with (3M01344) - Reef Brite LED Controller Interface - Single, or (3M01343) - Reef Brite LED Controller Interface - Dual. TECH ModelXHO Model Dimensions# of LED’sWattageLength# of LED’sWattage 8x1x1.7569Wxxx 12x1x1.7569Wxxx 15x1x1.7569W151218W 24x1x1.751220W241827W 30x1x1.751830W302436W 36x1x1.751830W363045W 48x1x1.752437W483654W 60x1x1.753045W604872W 72x1x1.753654W725481W Important Notice: to get the maximum performance and life out of Reef Brite LED products, all models and power supplies should be located in a well-ventilated area. Failure to do so may void warranty.