GU24 Ballast 13 watt compact plug in fluorescent bulb (4 pin). Voltage - 277 volt, 60 hz, 0.15 amp, CUL Listed, Indoor/Outdoor use. Two pin Twist Lock connection. Excellent for recessed down lights, table and floor lamps, flood lights, interior and exterior fixtures. Reduce energy costs by changing to fluorescent ballasts and bulbs. This ballast is a GU24, 13 watt (only use 13 watt bulbs, base -G24q-1, base - GX24q-1. Item No. - GU2413277.