Royal mail letter size

Royal Mail, the postal service of the United Kingdom, has specific guidelines for letter sizes and dimensions. Here are the standard sizes for letters:

Standard Letter Size:

• Length: Up to 240 mm (9.45 inches)
• Width: Up to 165 mm (6.5 inches)
• Thickness: Up to 5 mm (0.2 inches)

Large Letter Size:

• Length: Up to 353 mm (13.9 inches)
• Width: Up to 250 mm (9.8 inches)
• Thickness: Up to 25 mm (1 inch)

Large Letter (Parcels) Size:

• Length: Up to 610 mm (24 inches)
• Width: Up to 460 mm (18.1 inches)
• Thickness: Up to 76 mm (3 inches)

Special Large Letter Size:

• Length: Up to 760 mm (29.9 inches)
• Width: Up to 610 mm (24 inches)
• Thickness: Up to 76 mm (3 inches)

Please note that these sizes are for standard letters and parcels. If you have a larger or irregularly shaped item, you may need to use a different type of postal service or packaging.

It's also important to note that Royal Mail has specific guidelines for the weight and size of items that can be sent as letters, packets, or parcels. You can find more information on their website or by contacting their customer service team.