---
type: faq
title: "How thick can my printed piece be and still mail as a letter?"
description: "To qualify for USPS letter postage, your printed piece has to stay inside specific thickness and weight limits. Most standard card and paper stocks fall co"
resource: https://www.4over4.com/faqs/general/how-thick-can-my-printed-piece-be-and-still-mail-as-a-letter
tags: ["Marketing Materials", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# How thick can my printed piece be and still mail as a letter?

To qualify for USPS letter postage, your printed piece has to stay inside specific thickness and weight limits. Most standard card and paper stocks fall co

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

- Page type: faq
- Hub: Marketing Materials
- URL: https://www.4over4.com/faqs/general/how-thick-can-my-printed-piece-be-and-still-mail-as-a-letter