* The XSA-318 Pin Fin Heat Sink are specifically designed for luminaires usingthe Xicato LED Modules. * Mechanical compatibility with direct mountingof the LED modules to the LED cooler and thermal performance matching the lumen packages. * Thermal resistance range Rth 3.7°C/W. For downlightdesigns from 400 to 1900 lumen. * Xicato Thermal Class E , ( 60° tilt angle, 40°C ambient ) . * The cooler design with mounting holes foreseen fordirect mounting of Xicato XSM、XIM and XTM Modules . * Diameter 48mm – Standard height 68mm , Other heights on request. * Forged from highly conductive aluminum.