---
type: guide
title: "Envelope Types Explained and What Each Style Is Built to Hold"
description: "The six envelope styles a printer stocks, how the opening edge, flap and seam change each one, the window aperture rules, and which envelope to order."
resource: https://www.4over4.com/guide/envelope-types-explained
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/envelope-types-explained
    title: "Envelope Types Explained and What Each Style Is Built to Hold"
status: stable
---

# Envelope Types Explained and What Each Style Is Built to Hold

The six envelope styles a printer stocks, how the opening edge, flap and seam change each one, the window aperture rules, and which envelope to order.

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

- Page type: guide
- URL: https://www.4over4.com/guide/envelope-types-explained