By using the ruler or the tap ruler measure to determine either mini boxes or huge boxes' dimensions.
Length x Width x Height in millimeter (mm)
Measure the Length
The length is the longer panel of the entire box / carton
Measure the Width
The width is the shorter panel of the entire box / carton
Measure the Height
The height/depth is the vertical panel of the entire box / carton
Regular Slotted Carton (RSC)
Pizza box
Cake box