fluorersecent t12 ballasts (commack)

dear sir/madam:

i am looking for t12 fluorescent ballasts for t12, 4 tube, 48 inches long or complete fixture.

the current ballasts on the exiting unit are from advance transformer co. model number r 2540-1tp

thanks,

dave
646-389-0892

please do not call or text if you are a telemarketer!!!!!!!!!!!