A reliable and functional choice non-dimmable multi-lamp ballast for public building applications with 18-21 watt CFL and T2 (7mm diameter) fluorescent lighting systems. This Osram Quicktronic Economic Ballast benefits from automatic restart after lamp replacement and automatic shutdown at end of life a 30000 hour service life and a large input voltage range of 176-254V. The very lightweight and compact housing measures 80mm x 40mm x 22mm