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Postal Encyclopedia

Facing Identification Mark

Updated 2026-07-24

FIM

Barcodes & Tracking

A pattern of vertical bars printed near the postage area on certain reply mail pieces to support USPS processing.

Definition reviewed 2026-07-24. Plavidian reference, written from the USPS Domestic Mail Manual. Final mail classification, postage, and preparation are confirmed after list processing and production review.

Related terms in Barcodes & Tracking

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Ask Plavidian™ for an answer grounded in the USPS Domestic Mail Manual, or send us the job and we will confirm the preparation before you print.

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