内ない寸すん

noun

inside dimensions; internal dimensions

Technical term used in construction, manufacturing, and design to specify the interior measurements of a space or object.

• この箱はこの内ない寸すんは縦たて30cm、横よこ20cm、高たかさ15cmです。

  The inside dimensions of this box are 30 cm long, 20 cm wide, and 15 cm high.