Pg12 35w 50w 100w master sdw t high voltage sodium steam bulb philips high pressure sodium steam bulbs for indoor lightingadvantages extraordinary brightness and good colour reproduction r low maintenance costs thanks to long lifespancharacteristics unique warm white colour impression bulb design for use in lamps for accent and general lightingusage suitable for operation in open lamps suitable for the illumination of shoes and leather goods fresh food wine and baked goods