GE 8G1022W
The GE 8G1022W and the GE 8G1020 are F40T12 magnetic rapid start ballast that was used in 2-lamp linear fluorescent lamps in the 1970's and 1980's. This item has been discontinued by the manufacturer. The equivalent replacement is the B234SR120M-A which is an electronic fluorescent ballast that will save you 20% on energy cost without changing the fixture or lamp, and comes with a 5 year warranty.