Flat rate shipping is ideal for those that have to ship multiple or heavier shipments.Flat Rate Envelope 12-1/2' x 9-1/2' Legal Flat Rate Envelope 15' x 9-1/2' Padded Flat Rate Envelope 12-1/2' x 9-1/2' Priority Mail: Flat Rate Envelope 12-1/2' x 9-1/2' or smaller Legal Flat Rate Envelope 15' x 9-1/2' Padded Flat Rate Envelope 12-1/2' x 9-1/2' Small Flat Rate Box 8-5/8' x 5-3/8' x 1-5/8' InsideĨ-11/16' x 5-7/16' x 1-3/4' Outside Medium Flat Rate Boxes 11' x 8-1/2' x 5-1/2' Insideġ4' x 12' x 3-1/2' Outside Large Flat Rate Boxes 12' x 12' x 5-1/2' InsideĢ4-1/16' x 11-7/8' x 3-1/8' Outside APO/FPO/DPO Flat Rate Box (USA Military Bases) 12' x 12' x 5-1/2' Inside

As a general rule, we recommend using a standard shipping service to ship smaller packages, as the rate is determined purely by the size, maximum weight, and possible long distances it needs to travel. SFL Worldwide makes it easy for our users to get discounted rates for small and large flat rate box shipping and standard shipping with our intuitive rate calculator that gets quotes from some of the best carriers in the industry, such as DHL, UPS, and FedEx within seconds. Use our instant rate calculator to find a USPS Priority Mail Express standard or flat rate plan that suits your needs.

Unlike Flat Rate Shipping, regular or standard shipping calculates rates based on a package’s weight, size, destination, and service to determine your shipping prices. Flat Rate Shipping, as the name suggests, offer a fixed and flat rate for all shipments, irrespective of their size or weight.

Shipping methods have their own advantages and disadvantages.

How much to send small flat rate box