2.4x2.5 2.4x2.5, 2.4 x 2.55 2.4x2.5. There are any references about 2.4x2.5 in here. you can look below. 2.4x2.52.4x2.5 2.4 x 2.552.4 x 2.552.4x2.5, 2.4 x 2.55