Brown Mailing Box 330x250x80 mm (Pack of 20) 11489. Sturdy board construction helps to shield items from bumps and scratches. Close them up easily and securely with the self-adhesive seal and your recipient can open them up just as quickly with the tear-open strip. These boxes are perfectly sized for large books and similar items. Parcel box for mailing (330x250mm). Self-adhesive strip for sealing. Easy tear-open strip for recipient. Large enough for DVD and CD cases. Made from at least 65% recycled content. For items up to 80mm thick.