---
type: faq
title: "What size is an A9 envelope?"
description: "An A9 envelope measures 5 3/4 x 8 3/4 inches (5.75 x 8.75), with the flap on the 8 3/4 inch side. A9 fits cards up to roughly 5 1/2 x 8 1/2 inches. A popul"
resource: https://www.4over4.com/faqs/business-stationery/what-size-is-an-a9-envelope
tags: ["Business Stationery", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# What size is an A9 envelope?

An A9 envelope measures 5 3/4 x 8 3/4 inches (5.75 x 8.75), with the flap on the 8 3/4 inch side. A9 fits cards up to roughly 5 1/2 x 8 1/2 inches. A popul

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/what-size-is-an-a9-envelope