Advance SM-125-S-1-TP Single-Lamp F42T6 Slimline Ballast

Here is a rare ballast that I had the pleasure of purchasing at a ReStore last year. It is an Advance instant-start magnetic ballast for one F42T6 slimline fluorescent lamp. F42T6 slimlines were mainly used in display cases decades ago, along with their 64" counterpart, the F64T6. They are extremely rare today. This particular ballast can only do the F42T6, but a larger model, the SM-151-S-TP, can do the F96T8 (51w), F72T8, F64T6, or F42T6 (all 200ma lamps) with one model.