To better align the price of postage with actual processing costs, the USPS is shifting from the use of a pure weight value to a size, thickness and weight combination when determining the postage.  This is known as Shape-Based Pricing.  This new structure is effective with the May 14, 2007 postal rate change.

Under the new USPS Shape-Based Pricing guidelines, it is now critical that a mail piece be measured and classified as either a letter, flat or parcel to ensure the proper postage value is applied.  This sturdy, self-standing, acrylic Shape-Based Pricing sorting device can help you efficiently categorize the mail under the new regulations.  It contains the size measurements and thickness slots allowing the mailpiece to be correctly categorized into one of the three new rate categories: letter, flat, or parcel.

Are you prepared for the new USPS Rate Change? | Learn More | Announcement