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In my business
“A MUST for converting to T8 LED. These are very simple flat metal. Bend to desired width of fixture. Add new non shunted socket with wires for direct end LED bulbs and Tek screw to fixture. You will need your own wire. Most of the time you can use the ballast wire for the sockets. Snap the old covers back on and insert bulbs. You can configure either two 4' bulbs or 4 4' bulbs per fixture. Also come with a power disconnect fitting.”