I installed a Lutron Maestro dimmer switch (MACL-153MLH-WH) and two Maestro Companion dimmer switches (MA-RH-WH) in a 4-way. I bought the switches at Menards. They have a good diagram that comes with the switch but it shows the power going into the first box and the load coming out of the last box, in my situation I wanted both the power and the load to be into and out of the same box.
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