B100ELC BODINE EMERGENCY FLUORESCENT BALLAST T8 B100

I have been in the electrical field for 30 years, and have installed alot of ballasts. I have had some that you needed an Engineering degree to figure out, but the "Bodine Battery Backup Ballast" are very easy to understand and install. I would recommend them to anyone doing multiple retro fits or just want to add one to an existing fixture.