C4/A4 320mm x 230mm 21mm Royal Mail Brown Large Letter Cardboard Postal Mailing PiP Boxes (Pack of 25)

C4/A4, Internal Dimension 320mm x 230mm x 21mm (L x W x H) Fits Royal Large Letter Boxes STRONG AND EASY TO ASSEMBLE - Our brown quick-to-assemble postal boxes are manufactured from strong single-wall cardboard and come flat packed for easy storage. TGL- Find more at our store for other sizes and quantities. Rest assured here at TGL we don't compromise on Quality If for whatever reason you are not 100% satisfied with the product even if you have used it all just contact us and we will either refund you in full, send a free replacement, or work until your completely happy. Visit Our Store for more sizes and quantity