Phantom II 1000W 120/240 V Dimmable Hydroponics Ballast for Grow Lights (2 Pack) CategoryFull_Home & Garden | Decor | Seasonal & Holiday Decorations | Christmas Tree Stands With an 8-inch interior diameter

With an 8-inch interior diameter

Easy to install in nearly any car

atmosphere

integral width filter media supports media and retains pleat shape even when dirty

Phantom II 1000W 120/240 V Dimmable Hydroponics Ballast for Grow Lights (2 Pack) CategoryFull_Home & Garden | Decor | Seasonal & Holiday Decorations | Christmas Tree Stands With an 8-inch interior diameterBehind every great hydroponics or indoor gardening lighting system is a great ballast, and the Phantom II 1000 Watt 120 240 Volt Dimmable Digital Ballast is the greatest of the great. This digital ballast features Smart Alert technology that utilizes a 32 MHz, fully integrated microprocessor to keep your setup running. The hot restrike programming protect the lamp and ballast if it turns off unexpectedly. It will not restart a hot lamp for 15 minutes