3- Lumatek 600 WATT DUAL DIGITAL BALLAST Dimmable

These have up to 30% more lumen output than some old style magnetic ballasts. More light equals more yield. The Lumatek ballast have increased efficacy over magnetic ballasts. They lose fewer watts from the power supply to the lamp. The high frequency output results in low power loss at the cathodes in addition to better overall power management. They are also completely silent.
The Lumatek ballast also includes the industry first "super lumen switch". This feature will boost lumen output by 10% when the switch is activated. This allows unprecedented control of lumen output during ballast use.
These retail for $320 + tax, so $160 is a smoking deal! These won`t last long so email ASAP if interested.