Cheap Advance Mark 3 R-4S40-A-TP-AC - 4 Lamp Fluorescent Ballast - F40T12

Customer Ratings:

When you're trying to replace an old ballast, you can't expect perfection everytime. These have plug-ins on each end. If the old plug fits the new ballast, you're golden. If not, you have 16 wires to cut and wire-nut together. I didn't get lucky, maybe you will. The new ones plug in towards the bottom of the ballast. My old ones plug in toward the center of the ballast. Different size plug too.

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