There Is No Way To Exceed the Weight Limit of a Small USPS Flat Rate Box, Even With the Densest Metal on the Planet
The United Service Postal Service (USPS) is highly reliable, and one of its most interesting policies will spare you the stress of some your packages ever being overweight. In a now-deleted tweet, attorney Paul Sherman shared that it was “physically impossible” to exceed the the 70-pound domestic weight limit of the small flat-rate box, not even if you filled it with the densest metal found on Earth.