The Tridonic PC 1x28-33 HO DD COMBO is a combination electronic ballast and emergency lighting unit to run 1 x 28w 2D compact fluorescent. They have a 3 hour rated duration and should be used with a 3 cell battery pack. These ballasts come with a 5-year warranty Tridonic article number: 89899957Dimensions: 123 x 79 x 31mm
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