三さん辺ぺん

noun

three sides (length, width, height)

Used when referring to the three dimensions of an object, especially in contexts like shipping, packaging, or geometry.

• この箱はこの三さん辺ぺんの合ごう計けいは120センチ以い内ないです。

  The sum of the three sides of this box is within 120 cm.