THESE POSTAL BOXES ARE MAXIMUM SIZE FOR ROYAL MAIL SMALL PARCEL
Description: Manufactured from single wall flute corrugated board, with a kraft finish. One shaped tab that slot-locks into the side of the box for final closure. All delivered flat packed for easy space saving storage.
Size (internal): 440x333x150mm (17.3×13.1×5.9″)
L x W x H (internal dimensions)
Usage: For transportation of goods in the postal system within Royal Mail Small Parcel Size.