Photo 1 of Chamberlain Belt Drive Rail Extension Kit for 10' High Garage Doors---missing item

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Photo 1 of Chamberlain Belt Drive Rail Extension Kit for 10' High Garage Doors---missing itemPhoto 2 of Chamberlain Belt Drive Rail Extension Kit for 10' High Garage Doors---missing itemPhoto 3 of Chamberlain Belt Drive Rail Extension Kit for 10' High Garage Doors---missing item