MAXI PiP Boxes - Maximum Size Large Letter Boxes
Saves £££'s with
these Royal Mail Pricing In Proportion Proof Boxes
MAXI PiP Pricing In Proportion PiP Box (This Is The Absolute Maximum Size Item That Can Be Sent Via Royal Mail As A Large Letter)
In Addition To The Pricing In Proportion Proof Box Above We Manufacture & Hold A Range Of Other Sizes. See The PiP Link Below