---
type: guide
title: "How to Size, Choose and Apply Envelope Sticker Seals"
description: "Envelope seal sizes that fit A7 and #10 flaps, when a clear seal beats foil, and how to place and press a seal so it holds without warping the envelope."
resource: https://www.4over4.com/guide/envelope-sticker-seals-sizes-clear-vs-foil-and-how-to-apply-them
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-sticker-seals-sizes-clear-vs-foil-and-how-to-apply-them
    title: "How to Size, Choose and Apply Envelope Sticker Seals"
status: stable
---

# How to Size, Choose and Apply Envelope Sticker Seals

Envelope seal sizes that fit A7 and #10 flaps, when a clear seal beats foil, and how to place and press a seal so it holds without warping the envelope.

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

- Page type: guide
- URL: https://www.4over4.com/guide/envelope-sticker-seals-sizes-clear-vs-foil-and-how-to-apply-them