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Internal Dimensions

Min 60mm, Max 1200mm, 1 inch = 25.4mm

Pricing in Proportion (PiP) Guide

The Royal Mail’s Pricing in Proportion (PiP) initiative was developed to change the criteria for postage charges from weight alone to a combination of size, weight and volume. This scheme recently changed in October 2013.

Below is an updated summary of sizes and weights... has a wide range of postal envelopes and packaging that can be found in our Postal Packaging section that meet the new postal requirements and changes, you can view the new changes on the table below.

If you have any questions please feel free to get in touch with our helpful sales team on 0345 88 00 355


(source at:

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