Royal Mail Maximisers

Our range of Royal Mail Large Letter and Small Parcel mailers have been designed specifically to give the maximum delivery space, yet still fall within the Royal Mailer large letter and small parcel size.

What are royal mail large letter and small parcel sizes?

• Royal mail parcel size 450 x 350 x 160mm
• Large Letter size 353 x 250 x 25mm

Our range of Royal Mail Small Parcel and Large Letter compliant mailers have been tried, tested and found to save time and money by the Internet’s biggest retailers…