Ark Lighting Low Bay Drop Lens ALB11-ALU22-DL 400W HPS 400W High Pressure Sodium Quad Tap - Amazon.com
GE Lucalox High Pressure Sodium Light Bulb, B17 HPS Bulb, 150-Watt, 16000 Lumen, Medium Base, White, 1-Pack, High Intensity Discharge, HID HPS Bulb for Use Only With S55 Ballast - High Intensity
GE LIGHTING 400W, ED28 High Pressure Sodium HID Light Bulb: High Intensity Discharge Bulbs: Amazon.com: Tools & Home Improvement
Amazon.com: Sunlite 81262 LED T36 Super Bright High Lumen Corn Light Bulb, 27 Watts (300W=) 3500 Lm, Medium e26 Base, 120-277 Volt, Non-Dimmable, 50K-Super White, UL Listed-Wet Location, T36-300W=