SELECTION OF ROYAL MAIL SMALL PARCEL SIZE POSTAL CARDBOARD BOXES *ALL SIZES*
Internal Size (mm). 12 x 9 x 9" 305 x 229 x 229mm B (approx. 12 x 9 x 4" 305 x 229 x 102mm B (approx. 12 x 9 x 6" 305 x 229 x 152mm B (approx. 9 x 9 x 6" 229 x 229 x 152mm B (approx. ).