This item is new,never used. The only issue with this item is that I dropped the ballast while in the box and dented the mounting fin. As shown in third picture. Ballast was tested and works perfect.

Lumatek 1000W 240v HPS/MH E-Ballast SKU: LK1TH240
Weight: 12.8 lbs.
Package Dimensions: 16.4L x 8.9W x 3.8H
Suggested Retail: $389.95

The market's most popular and best E-ballast has been improved. The Lumatek E-ballast is a performance leader. Powers both metal halide and high-pressure sodium lamps (except the 750W model, which only powers HPS lamps). Available in 250, 400, 600, Dual 600, 750, and 1000W as well as generator friendly 400 & 600W.

• Up to 20% MORE LUMENS; faster growth, bigger harvests

• Unique graduated fin design for more efficient cooling

• Completely pre-wired with popular BAREF lamp cord

• Internal Resin coating protects components for long life

• External breaker system protects against power surges

• Completely silent

• 4.42 Amps

Ballast Size: 3-1/2"H x 6"W x 13-1/2"L

On Nov-04-09 at 18:33:18 PST, seller added the following information:

This ballast comes with a dimmable with super lumens switch. The control knob on this ballast allows you to adjust your light output depending on your specific needs.This ballast comes with four phase controller enabling you to set the output of the ballast to 100% 75% or 50%. In addition to being able to dim the lights the exclusive super lumens enables the ballast toboost your light output by up to 10%.