When you compare shipping rates, you'll see differences among the carriers. One might charge you dimensional weight while another carrier won't. Dimensional weight basically is a calculated weight based on the size of the box, rather than the actual weight. This occurs when you have a large, light package, but the professionals at PostalAnnex+ help you pick the right box to avoid dimensional weigh
t when possible (without sacrificing protection of your valuables). Why pay more for shipping rates if you don't have to? At PostalAnnex+, you can compare UPS shipping rates with rates for FedEx and USPS.