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Quiet zone requirements
Quiet zones are areas on a mail item that you must leave clear of printing, images, and dark colours. This ensures that our automated equipment can easily find and read addressing information, then apply the barcode that makes efficient processing possible.
Our equipment applies a fluorescent barcode on the back side of the item. We recommend the following quiet zones on the back of the item:
For items with horizontal address orientation
The area 15 mm high by 140 mm long measured from the bottom left edge.
For items with vertical address orientation
The area 140 mm high by 15 mm long measured from the bottom right edge.