Royal Mail Pricing in Proportion has changed.
Following on from the introduction of the Large Letter Size a while ago from 1st April 2013 we now have Small Parcel and Medium Parcel sizes. Larger or heavier parcels will have to use the Parcelforce service or any other courier.
The new formats are based on size as well as weight as per the table below.
We have added a number of new boxes to our range to accomodate the new formats, these are quoted with Internal Sizes. The Royal Mail Size formats quote maxiumum External Sizes.
Royal Mail have changed the Small Parcel Sizes since their introduction on a few occasions. We endeavour to keep pace with their changes and the measurements below are correct as of 30/10/2014. Please check on the Royal Mail Website for any changes to this.
Ensure you keep your postage costs to a minimum by selecting the most suitable Boxes, Jiffy Bags or other products from our range.
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| Royal Mail Pricing In Proportion size | Large Letter | Small Parcel | Medium Parcel |
| Maximum EXTERNAL length | 353mm | 450mm | 610mm |
| Maximum EXTERNAL width | 250mm | 350mm | 460mm |
| Maximum EXTERNAL height | 25mm | 160mm | 460mm |
| Maximum weight | 750g | 2kg | 20kg |
| Suitable postal products from our range |
INTERNAL SIZES QUOTED
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| Large Letter Boxes |
Small Parcel Boxes | Medium Parcel Boxes | |
| White Postal Boxes |
PiP 1 160 x 110 x 20mm PiP 2 222 x 160 x 20mm PiP 3 324 x 230 x 20mm |
PB1 150 x 60 x 60mm PB2 140 x 130 x 50mm PB4 200 x 120 x 50mm PB5 250 x 210 x 50mm PB8 420 x 260 x 50mm Small Parcel Box 419 x 338 x 72mm |
all other sizes |
| Large Letter Boxes | Small Parcel Boxes | Medium Parcel Boxes | |
| Single Wall Boxes |
none | 4" Cube 102 x 102 x 102mm 5" Cube 127 x 127 x 127mm 6" Cube 152 x 152 x 152mm |
most other sizes |
| Large Letter | Small Parcel | Medium Parcel | |
| Jiffy Bubble Lined Envelopes | Size 000 Size 00 Size 0 Size 1 Size 2 Size 3 |
Size 4 Size 5 Size 6 Size 7 |
none |
| Large Letter | Small Parcel | Medium Parcel | |
| Plastic Postal Bags | 170 x 230mm | 230 x 310mm 250 x 350mm 320 x 440mm |
all other sizes |