Low pressure sodium lamps (part 6)
![Later Philips 66w SOX-E lamp](../images/Philips-66w-SOX-E-Lamp.jpg)
Later Philips 66w SOX-E lamp
![Philips 91w SOX-E lamp](../images/Philips-91w-SOX-E-Lamp.jpg)
Philips 91w SOX-E lamp
![Philips 131w SOX-E lamp](../images/Philips-131w-SOX-E-lamp.jpg)
Philips 131w SOX-E lamp
![Philips SOX-Plus lamps have a Red Cap](../images/SOX-Plus-Cap.jpg)
Philips SOX-Plus lamps have a Red Cap
![Philips 35w SOX-Plus lamp](../images/Philips-35w-SOX-Plus-Lamp.jpg)
Philips 35w SOX-Plus lamp
![Philips 55w SOX-Plus lamp](../images/Philips%2055w%20SOX-Plus%20lamp.jpg)
Philips 55w SOX-Plus lamp
![Philips 90w SOX-Plus lamp](../images/Philips-90w-SOX-Plus-Lamp.jpg)
Philips 90w SOX-Plus lamp
![Philips 135w SOX-Plus lamp](../images/Philips-135w-SOX-Plus-Lamp.jpg)
Philips 135w SOX-Plus lamp
![Philips SOX-PSG lamps have a Blue Cap](../images/SOX-PSG-Cap.jpg)
Philips SOX-PSG lamps have a Blue Cap
![Philips 35w SOX-PSG lamp](../images/Philips-35w-SOX-PSG-Lamp.jpg)
Philips 35w SOX-PSG lamp
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