How do you determine the dimensions of a mailpiece?

To determine the dimensions of a mailpiece effectively, the most accurate method is to combine the length plus girth. This approach allows for a complete assessment of the mailpiece's size, which is essential for ensuring it meets postal regulations and pricing criteria for various mailing options.

Length is typically defined as the longest side of the mailpiece, while girth is measured by adding together the width and height (circumference) of the package. This combined measurement is crucial for determining postage rates and ensuring the mailpiece fits within specified size limits for different mailing services.

Using just length, measuring each side separately, or estimating based on weight does not provide the comprehensive assessment needed for postage calculations. Each of these methods lacks the necessary detail and accuracy that comes from calculating the combined length and girth measurement, particularly for packages and non-standard mail formats. Thus, incorporating both length and girth is vital for proper handling and delivery through the postal service.