45.25 inches 11/24/2009 Brooklyn, New York United States

The Bell House has a Connect Four board that measures 45 1/4" in width and 32 1/4" in height. The pieces used are 5 1/4" in diameter. 

The board was documented on November 24, 2009 during a Connect Four Tournament held at the venue. Dan Rollman and Rob Birdsong were on hand to measure it.