The LL137 Series provides a focused line of illumination in a passively cooled design. Provides a medium intensity level of 280kLux (working distance of 75mm). Pre-engineered for expandability in 6″ (152mm) increments up to 96″ (2.44m). Available intensity control provides illuminance adjustability for every 6″ increment via a 0 – 10v input. Note: If only looking for white illumination, our LL167 Series provides a 74% brighter beam in a similar package.