GE 72269 GE132-MV-N 120/277-volt Multi-Volt ProLine Electronic Fluorescent T8 Instant Start Ballast, 1 F32T8 lamp. Instant Start T8 Ballast will accept up to 1 F32T8 lamp. Accommodates multi-voltages from 120 to 277-volts, extra versatile for your unique projects. Instant start electronic ballast for long lamp starting cycles and low initial cost. High performance instant start electronic ballast is for all general fluorescent applications. Mounting dimensions: 8.9-Inch L x 1.1-Inch W, Mounting slot set 0.3-Inch apart. Multi-Volt ProLine T8 Electronic Fluorescent ballasts meet minimum efficiency requirements as established with the NEMA Premium ballast program. Parallel lamp operation keeps the unit maintenance easier to manage, if one lamp fails others will stay on. Unit features thermal protection, anti-striation control, and auto-restart function. T8 ballast sound rating: Class A (20-24 decibels). Ballast factor rating of Normal .87 for full light output, ballast factor rating controls light output and wattages of each lamp, a lower BF will reduce light output and wattage of each lamp, meaning more lamps would be needed to achieve a certain foot-candle level in the same area. Instant start electronic ballast for long lamp starting cycles and low initial cost. UL Type 1 Outdoor, UL Type HL, UL Class P, CUL Listed, NEMA Premium, and ROHS Compliant - Industry standards for safety and performance. UL Type 1 Outdoor, UL Type HL, UL Class P listed, CUL listed, NEMA Premium, and ROHS Compliant - Industry standards for safety and performance.