* The EtraLED-VOS-11020 Vossloh-Schwabe Modular Passive LED Coolers are specifically designed for luminaires using the Vossloh-Schwabe LED engines. * Mechanical compatibility with direct mounting of the LED engines to the LED cooler and thermal performance matching the lumen packages. * For spotlight and downlight designs from 1200 to 4000 lumen. * Thermal resistance range Rth