(case of 8) GE 31307 Proline T5 2-Bulb Electronic Ballast, GE28T5/2-120RESL, Rapid start

For 2 bulb residential fixtures using F14T5 21-inch, F21T5 33-inch and F28T5 45-inch bulbs GE 31307; GE28T5/2-120RESL Rapid Start, Proline 2 lamp T5 electronic ballast case of 8 ballasts