High Lumen
A lumen is a measure of the amount of brightness of a lightbulb -- the higher the number of lumens, the brighter the lightbulb.
High Lumen Emergency Lights are much brighter than the standard emergency light.
Industrial
Emergency Lite Service Center has a comprehensive line of industrial exit signs, emergency lights, batteries and accessories.
Black
Most product that have black housing color are made of a thermoplastic material.