what does flat rate shipping mean

what does flat rate shipping mean refers to a pricing structure where the cost of shipping remains the same, regardless of the weight or destination of the package, as long as it fits into a specified box or envelope. This type of shipping is commonly offered by USPS, with flat-rate boxes available for both domestic and international shipping. Flat rate shipping is often more cost-effective for heavy or bulky items, making it a popular choice for businesses and individuals who need predictable shipping costs.