---
type: guide
title: "Standard Trifold Size and the Exact Panel Widths That Fold Right"
description: "The standard trifold is 8.5 x 11 flat, folding to 3.67 x 8.5. Exact panel widths for every size, why the tuck-in panel is narrower, and what fits a #10."
resource: https://www.4over4.com/guide/trifold-brochure-sizes-the-complete-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/trifold-brochure-sizes-the-complete-guide
    title: "Standard Trifold Size and the Exact Panel Widths That Fold Right"
status: stable
---

# Standard Trifold Size and the Exact Panel Widths That Fold Right

The standard trifold is 8.5 x 11 flat, folding to 3.67 x 8.5. Exact panel widths for every size, why the tuck-in panel is narrower, and what fits a #10.

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

- Page type: guide
- URL: https://www.4over4.com/guide/trifold-brochure-sizes-the-complete-guide