The DLC defines bare lamp as the performance characteristics of a replacement lamp when operated outside of a luminaire or retrofit kit, including the effects of an external ballast (for Type A and Dual Mode lamps) or driver (for Type C lamps).
© 2025 DesignLights Consortium. The DesignLights Consortium is a project of Efficiency Forward, Inc., a non-profit 501(c)3 organization. Privacy Policy Terms of Use