THESE FLAT BOXES MEET THE ROYAL MAIL LARGE LETTER 25MM CRITERIA
Description: Manufactured?from single wall E flute corrugated board, with a kraft finish.??Two shaped tabs that slot-lock into the?20mm side of the box for final closure.?All delivered flat packed?for easy space saving storage.
Size: 218x159x20mm (8.58×6.25×0.8″) – C5
????????L???x? W? x? H (internal dimensions)
Usage: For transportation of goods in the postal system within Royal Mail PIP limitations.