Two new MagneTek Triad Electronic Ballasts (B232I120HP), 120 volt, 2-lamp applications for F17T8, F25T8 or F32T8. Single lamp for F25T8 or F32T8, under warranty, wiring diagram on case, $55 shipping included. (I am in the process of retrofitting two 20L hoods and after purchasing these ballasts, decided to go with a three-lamp set up.)