Double Wall cardboard boxes DPB/17 are 457x305x254mm, they are specially made with a Double Wall structure that uses two layers of robust corrugated card for extra strength and rigidity. A great choice for storing or transporting heavy or awkwardly shaped items, these double wall cardboard boxes have the extra cardboard thickness and overall strength needed to avoid piercing or crushing in transit offering reliable protection for the contents. For compact storage we supply the double wall cardboard boxes flat-packed. To make them ready to use simply pop them into shape and seal with good quality packing tape to make a secure container.