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Philips Advance 71A7801-001D :: High Pressure Sodium Ballast, 50W, 120/277V :: PLATT ELECTRIC SUPPLY
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Keystone MH-50X-Q-KIT 50W Multi-Tap Metal Halide Ballast Kit
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Universal Core and Coil Ballast Kit For 50W Metal Halide Lamp 120V to 277V | M50MLTLC3M500K | Bulbs.com
AMP: Morimoto XB55 2.0 50 Watt HID Ballast
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Sola E-750-F-230/232-LP-SC 50W 120V Fluorescent Ballast
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Keystone HPS-50R-1-KIT 50W (S68) High Pressure Sodium Ballast Kit
