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Sunlite 03620-SU LU150/MED High Pressure Sodium Light Bulb, 150 Watts, ED17/MED, Medium Base (E26), ANSI Code S55, 15000 Lumen, 20000 Life Hours, Clear, 2100K - High Intensity Discharge Bulbs - Amazon.com
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Sunlite 03635-SU LU150/MOG 150 Watt High Pressure Sodium Light Bulb, Mogul Base (E39), ANSI Code S55, 16000 Lumen, 20000 Life Hours, Clear, 2100K - High Intensity Discharge Bulbs - Amazon.com
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Lighting Comparison: LED vs High Pressure Sodium/Low Pressure Sodium
