Design

11x18 Trifold Postcard Design Specs & Template Guide

August 8, 2025
By:
Brandon
⏱️ 3 minutes

Overview

LettrLabs’ 11" x 18" printed postcards are designed for bold visual storytelling and folded delivery. Designed with three vertical panels, they give you room to organize messaging into digestible sections. Whether you’re explaining a product, announcing an event, or walking through a service workflow, this format gives your content structure and visual clarity. This guide outlines everything you need to prepare your artwork — from exact dimensions to design-safe zones and postal requirements.

Typical Use Cases

  • Product Showcases: Feature products or services in each panel to tell a clear story.
  • Step-by-Step Guides: Great for how-it-works walkthroughs or onboarding sequences.
  • Event Promotions: Share event info, speaker lineups, and include QR codes or RSVP links.
  • Menu or Service List: Ideal for restaurants, salons, or local contractors.
  • Direct Response Offers: Include a call-to-action panel with a coupon code or tear-off incentive.

Design Dimensions

These are the precise layout specs to ensure your design prints perfectly without anything getting trimmed or misaligned.

| Design Area | Dimensions | Notes | |-----------------|-------------------------------------|---------------------------------------------------------------| | Full Bleed | 11.2" x 18.2" | Make sure your design extends to these edges for borderless printing. | | Final Trim Size | 11" x 18" | This is the finished size after cutting. | | Safe Zone | 10.7" x 17.7" | Keep text/logos within this area to avoid cutting during trimming. | | Panel Widths | Left: 6.05" / Center: 6.05" / Right: 5.9" | Allows proper folding without overlap or misalignment. | | Fold Lines | At 6.05" and 12.1" | For accurate trifold folds. | | Address Block | 2.62" H × 4.1" W (on back panel) | This area must remain clear for postal info and stamp. |

Product Specs

| Specs | Details | |----------------------|-----------------------------------------------------------------| | Fold Type | Trifold (Letter Fold) | | Paper Stock | Thick 100# Card Stock | | Printing | Ultra HD Color on both sides | | Personalization | Optional merge fields for name, discount code, etc. | | Addressing and Mailing | Address block + indicia required on back panel | | Integration Support | Available via Shopify, Klaviyo, Zapier, and more |

Quick Reference

11" x 18" Trifold Printed Postcard
Full Bleed Size: 11.2” x 18.2”
Trim Zone: 11” x 18”
Safe Zone: 10.7” x 17.7”

Download the Design Template

Click below to access the Canva template for this trifold postcard. It includes pre-set fold lines, trim zones, and safe area guides — so you can design confidently without starting from scratch.

👉 Download Template

Need Help?

Have questions about setting up your design or making sure it meets mailing guidelines? Contact our team — we’re happy to point you in the right direction.

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