---
type: guide
title: "Window Envelopes Explained and How to Line Up the Address Block"
description: "A window envelope shows the address printed on the document inside. Here is the #10 window position in inches, the address band on a folded letter, and the clearance USPS needs."
resource: https://www.4over4.com/guide/what-is-a-window-envelope-setup-guide
tags: ["guide"]
generated:
  by: "process:4over4-mapp-build"
  at: 2026-09-08T01:19:44.025Z
timestamp: 2026-09-08T01:19:44.025Z
sources:
  - resource: https://www.4over4.com/guide/what-is-a-window-envelope-setup-guide
    title: "Window Envelopes Explained and How to Line Up the Address Block"
status: stable
---

# Window Envelopes Explained and How to Line Up the Address Block

A window envelope shows the address printed on the document inside. Here is the #10 window position in inches, the address band on a folded letter, and the clearance USPS needs.

See [all guide concepts](index.md).

- Page type: guide
- URL: https://www.4over4.com/guide/what-is-a-window-envelope-setup-guide