BAL-650c 2 PIN CFL ballast offer durable painted steel construction in white finish, comes with 2? flex conduits on both ends, and has a compact design that fits most fluorescent fixtures. It also comes compatible with most one-, two-, three-, and four-lamp electronic standard and dimming AC ballasts and operates one 13W-26W, 2-pin compact fluorescent lamps with GX23 and G24D bases.