SunStream 1000 Watt Dimmable Digital Electronic Ballast for MH and HPS Grow Light ETL Listed and 8 FT Power Cord (Full Version) : Amazon.ca: Tools & Home Improvement
SG Ballast Magnetic DE / HPS 1000W 120 / 240V – Urban Grow Garden Supply
1000W 240/277VAC DE Electronic Ballast
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Hydroponic Supplies Light Energy EZ Switchable Ballast Kit 1000W MH/HPS Grow Store
iPower 400W 600W 1000W Digital Dimmable Electronic Ballast for HPS MH Grow Light | eBay
VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement
Grow Co. DG Series 1000w DE High Frequency Switchable Digital Ballast HPS MH CMH | eBay