The osram qtp m 1x26 42220 240 is a multiwatt non dimmable high frequency ballast to run 1 x 26 w double turn pl c 1 x 26 32 or 42w triple turn pl t 1 x 18 24 36 or 40w long single turn pl l 1 x 22 or 40w circular 1 x 24 or 39w high output t5 1 x18 24 or 36w f shape dulux f and a 1 x 18 or 36w t8 compact fluorescent lamp