400 WATT HPS Light Housing Complete Setup (Includes Digital Ballast) – CarpLite
1110247SCTC000C Ballast-400W MH M59 120/277 60Hz F-CAN Generic, Ignitor If Req unlimitedlights.com
Ballast - 400W - 120-400V generator with Gel Protect
Ballast HPS/MH 400W GIB | Lighting \ Ballasts HPS & MH \ Magnetic ballasts | Maxgrowshop.com
400W Metal Halide Digital Ballast - Bulk Reef Supply
400W Induction Induction Ballast 110-277V | ILF
Marine Floodlight | Ballast 250W-400W | Zhejiang Bozhou Marine
Reef Brite Digitally Controlled MH Ballast 400W | Premium Aquatics
AgroStar 400w Metal Halide Ballast ⋆ HTG Supply Hydroponics & Grow Lights
IceCap 400w Selectable Wattage Electronic Ballast | CoralVue
400W Induction Induction Ballast 110-277V | ILF
Hydro Crunch 400-Watt Digital Dimmable Ballast 120/240-Volt for Grow Lights C02A011050 - The Home Depot
Keystone MPS-400A-Q-CA 400W M135 M155 MH Pulse Start Ballast Kit - Light Bulb Surplus
Bodine AK400PRB ARC-Keeper Backup Ballast, 400W Metal-Halide, 2-Minute, 120/277V - Walmart.com
Universal Core and Coil Ballast Kit For 400W Metal Halide Lamp 120V to 480V | P400ML5AC4M500K | Bulbs.com
Reef Brite 400W Metal Halide Digital Ballast - ReefBum
Digital Greenhouse 400w Grow Light | HTG Supply
