Small Parcel Brown Die Cut Postal Boxes 225 x 76 x 73mm and 281 x 90 x 87mm EXTERIOR BOX DIMENSIONS: 225mm x 76mm x 73mm / 281mm x 90mm x 87mm. PLEASE MAKE SURE THAT YOUR CONTENTS WILL FIT IN THE BOX BEFORE ORDERING. Our Cardboard Postal Boxes are versatile boxes for shipping all manner of small goods in a lightweight and compact form. These boxes provide ample protection for fragile goods in transit and are more compact than bubble wrapping an item. Boxes are sent flat with some folding required.