E22142-277-347-TDE FLX 277/347V ELEC BALL 31279
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Spec Sheet
https://static.graybarcanada.com/Products/Ballasts/Ballasts%2C%20Fluor.%20Electronic/STD31279STD/Files/STD31279STD_Files.pdf
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Spec Sheet
https://static.graybarcanada.com/Products/Ballasts/Ballasts, Fluor. Electronic/STD31279STD/Files/STD31279STD_Files.pdf