VIVOSUN 1000W Dimmable Digital Ballast for Grow Light, Soft Start Program &Performance (Space Gray) - Walmart.com
Philips Advance - 3 Lamp, 277 Volt, 0.21 to 0.35 Amp, 0 to 39 Watt, Programmed Start, Electronic, Dimmable Fluorescent Ballast - 81374043 - MSC Industrial Supply
Amazon.com: VIVOSUN 1000 Watt Dimmable Electronic Digital Ballast with Enhanced Internal Cooled Fan, 25% Less Heat Generated and 15% Longer Service Life : Patio, Lawn & Garden
HF-Regulator II for TL-D lamps | HFR2ANTL | Philips lighting