IPG - 2 1/8 10.2 2.0 16.0 IPG - 4 1/4 13.4 2.0 19.5 IPG - 6 3/8 17.0 2.0 24.0 IPG - 8 1/2 21.2 2.0 29.0 IPG - 12 3/4 27.2 2.0 34.5 IPG - 16 1 34.0 2.0 42.0