Royal mail large letter dimensions

According to Royal Mail's guidelines, a Large Letter is defined as a letter that measures more than 76mm (3 inches) in thickness, but not exceeding 91mm (3.6 inches) in thickness.

In terms of dimensions, a Large Letter can have the following maximum sizes:

• Length: 610mm (24 inches)
• Width: 460mm (18.1 inches)
• Thickness: 91mm (3.6 inches)

It's worth noting that these dimensions apply to the overall size of the letter, including any packaging or wrapping. If you're unsure whether your item is a Large Letter or not, you can check Royal Mail's website or consult with a postal service representative for guidance.

Here are some examples of items that might be considered Large Letters:

• A large, thick envelope containing documents or papers
• A package wrapped in bubble wrap or foam to protect fragile items
• A large, flat item such as a poster or map

Keep in mind that even if your item meets the size criteria for a Large Letter, it may still be subject to additional fees or restrictions depending on its weight, size, and destination.