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Install the elbows so that the outlets face upwards. Measure up the wall 78 .", making sure that the line is plumb. Mark the position for the top screw hole. From the position of the top screw hole, measure down 35 3/8”. Mark the position for the center screw hole. From the center screw hole, measure down 19 1/8". Mark the position for the bottom screw hole. Use a 6 mm bit to drill the three screw holes. Install the set screws in the top and bottom holes. Use a 10 mm nut driver to attach a nut t