High pressure sodium lamps (part 4)
![Osram Vialox 250w NAV-T Super (SON-T Plus) lamp](../images/Osram-250w-NAV-T-Super.jpg)
Osram Vialox 250w NAV-T Super (SON-T Plus) lamp
![Osram Vialox 400w NAV-T SON-T lamp](../images/Osram%20Vialox%20400w%20NAV-T%20SON-T%20lamp.jpg)
Osram Vialox 400w NAV-T SON-T lamp
![Osram 400 watt NAV-T-I (SON-T-I) High Pressure Sodium Lamp with Internal Starter](../images/Osram-400w%20SON-T-I-Lamp.jpg)
Osram 400 watt NAV-T-I (SON-T-I) High Pressure Sodium Lamp with Internal Starter
![Close up of Starter Element](../images/Osram-400w%20SON-T-I-starter.jpg)
Close up of Starter Element
![Osram 600w SON-T-I Lamp](../images/Osram%20Vialox%20600w%20NAV-T%20SON-T%20lamp.jpg)
Osram 600w SON-T-I Lamp
![Osram 600 watt NAV-T Super (SON-T Plus) High Pressure Sodium Lamp](../images/Osram-600w-NAV-T-Plus-Lamp.jpg)
Osram 600 watt NAV-T Super (SON-T Plus) High Pressure Sodium Lamp
![Osram 600 watt NAV-T Super (SON-T Plus) High Pressure Sodium Lamp](../images/Osram-600w-NAV-T-Super-Lamp-box.jpg)
Osram 600 watt NAV-T Super (SON-T Plus) High Pressure Sodium Lamp
![Osram (German) 1000w NAV-T SON-T lamp](../images/Osram%20Vialox%20(German)%201000w%20NAV-T%20SON-T%20lamp.jpg)
Osram (German) 1000w NAV-T SON-T lamp
![Osram (UK) 1000w NAV-T SON-T lamp](../images/Osram%20Vialox%20(UK)%201000w%20NAV-T%20SON-T%20lamp.jpg)
Osram (UK) 1000w NAV-T SON-T lamp
![Osram Vialox 70w NAV-TS Lamp](../images/Osram%20Vialox%2070w%20NAV-TS%20Lamp.jpg)
Osram Vialox 70w NAV-TS Lamp
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