I have three hep SD254-58 ballasts. they were sold to me as used, working units by Dave at nano box. I haven't tested these myself so you are taking HIS word for it! sold as-is with no warranty, refund/return. $40 each shipped to the cont. us.
Each ballast can power two 54w lamps.
http://www.hepgroup.net/exec/product.php?mod=show&cid=27&pid=SD114-35&lg=E
Each ballast can power two 54w lamps.
http://www.hepgroup.net/exec/product.php?mod=show&cid=27&pid=SD114-35&lg=E
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