Lamp high pressure sodium, Sunlux EN. Nickel-plated base will not seize in the socket. Constructed with EYE specified, critical to performance arc tube materials (PCA-ceramic tube, frit sealing glass, electrode emitter). Sunlux EN lamps pass the EPA TCLP test criteria as non-hazardous waste: lead free base, low mercury content. Designed and manufactured to EYE quality specifications to ensure long life performance (up to 24 000+ hours rated life). Applications: roadway/streets, parking lots, industrial, warehouses.