Royal Mail PIP Large Letter Boxes C4 C5 C6 C7 Postal Box FSC Certified Lock tabs
These boxes are made from FSC Certified material which contains at least 70% recycled content. C7 Die-cut 101 x 101 x 20mm Large Letter. C4 Die-cut 322 x 229 x 20mm Large Letter. C5 Die-cut 220 x 160 x 20mm Large Letter.