---
type: faq
title: "What is the maximum size allowed for EDDM postcards?"
description: "USPS allows EDDM pieces up to 12' x 15', at which point they are classified as flats rather than letters. Size is not the only limit, though, weight and th"
resource: https://www.4over4.com/faqs/postcards/what-is-the-maximum-size-allowed-for-eddm-postcards
tags: ["Marketing Materials", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# What is the maximum size allowed for EDDM postcards?

USPS allows EDDM pieces up to 12' x 15', at which point they are classified as flats rather than letters. Size is not the only limit, though, weight and th

Part of the **Marketing Materials** hub. See [all faq concepts](index.md).

- Page type: faq
- Hub: Marketing Materials
- URL: https://www.4over4.com/faqs/postcards/what-is-the-maximum-size-allowed-for-eddm-postcards