HALO Recessed HALO Recessed EL406935 4-Inch 3500K LED Light Engine LED package consists of a chip on board design of multiple LEDs to create one virtual source for a productive cone of light Specially designed LED and heat sink integration ensures extended life of the LED package for 70% lumen maintenance LED emits no ultraviolet wave length, minimizing fading of fabrics, paint and artwork as compared to traditional light sources Uses 74% less energy, significantly reducing the heat emitted as compared to traditional light sources H4 LED Light Engines are ENERGY STAR Qualified as used with designated LED trims