Tridonic pc 1x58 t8 pro lp the tridonic pc 1x58 t8 pro lp is a non dimmable high frequency ballast to run 1 x 58 watt 5ft t8 fluorescent tube tridonic article number 22185215 tridonic pc 1x58 t8 pro lp ballasts have an average life of 50 000 hours product no 22185215 l x w x h 230 x 30 x 21 mm