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VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement
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Philips Advance - 2 Lamp, 120 Volt, 0.48 Amp, 0 to 39 Watt, Programmed Start, Electronic, Dimmable Fluorescent Ballast - 64314685 - MSC Industrial Supply
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