Keystone's extensive portfolio of electronic ballasts cover all fluorescent lighting application needs, including commercial, industrial, and residential fixtures
Keystone offers fluorescent ballasts in a variety of case styles to power most standard lamps
Keystone ballasts are burned-in at the factory to ensure both exceptional performance and superior reliability
Once each ballast is sealed and all assembly is complete, each unit is connected to the proper lamps and powered at full load for at least one hour
This burn-in testing eliminates virtually any manufacturing or component defects
