GE Lighting 71038 GE432-120RES-DIY LFL Resi Proline Electronic Standard Instant Start Ballast for 3 or 4 F32T8 Mount length: (M) 8.9-Inch / Mount width: (X or F) 1.1-Inch / Mount slots: (MS) 0.3-Inch GE's ballasts are among the highest energy-efficient ballasts available Ballast factor: Normal, lamp wiring: Parallel Starting method: Instant start Ballast type: Electronic