DG3 Series - Replace all DG3 Series Ballast Boards with DG4 (Part# 6800131) Ballast Boards.

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2 Year Warranty - based on date code.

First 2 digits is week of manufacturing, second 2 digits is year of manufacturing.
For example, "0206" was manufactured second week of 2006.

Manufacturing started January 2002
DG3 out of warranty
Last date of manufacture December 2007
Used in Foto-Flo 400, 200, Foto-Flo 44, Wall-O-Lite, Image 42, 82