---
type: faq
title: "Invitation Envelope Size Guide"
description: "Invitation envelopes are the A series. They use a thicker, more formal stock than everyday commercial envelopes and have side seams with a clean back panel"
resource: https://www.4over4.com/faqs/business-stationery/invitation-envelope-size-guide
tags: ["Business Stationery", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# Invitation Envelope Size Guide

Invitation envelopes are the A series. They use a thicker, more formal stock than everyday commercial envelopes and have side seams with a clean back panel

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

- Page type: faq
- Hub: Business Stationery
- URL: https://www.4over4.com/faqs/business-stationery/invitation-envelope-size-guide