Inexpensive. Easy replacement of installed ballasts. (It's a lot easier to swap out the ballast than the entire fixture.) ss When it wasn't available I used Menard's version, which has fewer wires and requires some electrical knowledge to convert to a circuit. My only caveat is that in the three years since the headlights were installed I've had to replace two of them. These are 48 inch Lithonia twin bulb wet area lights from Lowes.
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