Perfect for keeping postage costs low, these high quality postal boxes are 160x110x20mm allowing them to be sent as a Royal Mail Large Letter. Assembly is fast with pre-creased folding points and an integrated locking tab so these secure, protective postal boxes increase your efficiency as well as reducing your postal costs. Features include: 

• Degradable, recyclable and reusable
• Supplied flat packed
• Sized to ensure low postal costs
• Made from 75% recycled single wall board
• Simple to assemble
• White outer and brown inner