Us mail letter size

The standard size for a United States Postal Service (USPS) letter is:

• Length: 11.5 inches (29.2 cm)
• Width: 6.125 inches (15.6 cm)
• Thickness: 0.007 inch (0.18 mm) to 0.25 inch (6.4 mm)

This size is also known as a "standard letter" or "regular letter" size. It is the most common size for letters and is used for most personal and business correspondence.

It's worth noting that the USPS also has a "large envelope" size, which is slightly larger than the standard letter size. The dimensions for a large envelope are:

• Length: 12 inches (30.5 cm)
• Width: 15 inches (38.1 cm)
• Thickness: 0.007 inch (0.18 mm) to 0.25 inch (6.4 mm)

Large envelopes are used for items that are too large to fit in a standard letter envelope, such as catalogs, brochures, and documents that require additional space.