Variable length/width packaging box

摘要

A packaging box comprising a base plate and four engagement elements which are disposed at the corners of the base plate. The base plate includes a plurality of longitudinal and transverse grooves squarely intersecting with each other to form a plurality of squares. The base plate can be cut into a desired size along the grooves. Each engagement element includes a first portion, a second portion and a separation rib which is disposed at the junction sections of the first and second portions to form right angle bends. Each of the first and second portion is disposed in parallel with an inner plate and an outer plate. A hollow space is formed between the inner and outer plates to allow the edges of the base plate inserted thereinto. Each outer plate has a ridge edge inwardly extending for the outer end to engage with the grooves of the base plate.