Mailing Tubes Guide: How to Choose the Right Size & Strength

Mailing tubes are one of the most effective ways to ship posters, blueprints, artwork, maps, and other rolled materials without folding or creasing them. However, choosing the wrong tube size or strength can result in damaged products, higher shipping costs, and unhappy customers.

In this guide, we'll explain how to choose the right mailing tube size, compare strength options, review common tube styles, and highlight mistakes to avoid when shipping rolled products.

Imagine spending time finding a beautiful poster, carefully rolling it, placing it into a tube, and shipping it to your friends or client, only to arrive bent, crushed, or creased. This is one of the most common challenges people face when they select the wrong mailing tube. Mailing tubes are commonly used to safely ship items such as:

• Posters and artwork
• Blueprints and maps
• Photographs and prints
• Important documents and certificates

Choosing the right mailing tube ensures that your items arrive in perfect condition. This guide will explore mailing tube sizes, strength options, different types of mailing tubes and common mistakes to avoid when choosing one.

What Are Mailing Tubes and Why Are They Used?

A mailing tube is a hollow cylinder, usually made of cardboard, that is used to ship or store rolled items. With this you can just roll the papers or documents without folding or damaging them and securely place them inside the tube.

Cardboard mailing tubes are lightweight, strong, and affordable. They are available in a variety of lengths and diameters. Some are round and small enough to store a single document, while others are large to store architectural or engineering designs.

Mailing tubes are used by:

• Print shops use mailing tubes to send posters, banners and other printed materials to customers.
• Architects use it to send building plans, blue prints to construction sites.
• Artists send artwork, prints in mailing tubes to buyers.
• Businesses use mailing tubes to send promotional materials to clients.

The strong cardboard construction of the mailing tube helps protect contents from bending, folding and other forms of damage during transit. It also protects from moisture and absorbs impact caused by drop or rough handling during shipping.

Choosing the Right Mailing Tube Size

There are two important measurements that determine the right mailing tube size and help your item during shipping:

1. Length: How long the tube is

2. Diameter: How wide the opening of the tube is

Step 1: Measure the Length

Use a ruler or measuring tape to determine the length of your item. Choose a tube that is slightly longer than the item to allow space for the end caps that close the tube and a small buffer that helps prevent damage to the edge.

For example: a 24-inch poster fits best in a 27-inch tube.

Avoid choosing a tube that is too long. Too much empty space can allow the item to slide or shift during shipping, increasing the risk of dent, crease or other damage.

Step 2: Choose the Right Diameter

The diameter measures the width of the tube from one side to the other. It determines how tightly you need to roll your items to fit it inside.

A wider tube lets you roll the item gently, which helps prevent damage to thick paper, delicate prints, and artwork. A narrower tube is suitable for standard documents.

Here's a quick guide to help you pick right diameter:

Understanding Mailing Tube Strength

Not all mailing tubes offer the same level of strength and protection. A tube's strength depends on the thickness of its cardboard walls and the material used. Mailing tube strength is often determined by wall thickness and crush resistance. Thicker walls provide greater protection against stacking pressure, impacts, and rough handling during shipping.

Light-Duty Tubes
Best for: Standard documents, lightweight posters, and short local deliveries.
These tubes have thinner walls, are affordable and suitable for non-fragile items over short distances.

Heavy-Duty Tubes
Best for: Expensive artwork, large-format prints, industrial drawings, and long-distance shipping.
It is made with a thicker cardboard wall, providing greater resistance to crushing even if other packages are placed on top of it during transit.

Questions to help you choose:

• How fragile is the item? (More fragile = thicker walls needed)
• How far is it travelling? (Longer journey = more handling = stronger tube)
• How valuable is it? (Expensive items, better protection)
• Will it go through a courier, postal service, or freight? (Freight is rougher)

If you are unsure which tube to choose, go for the stronger option. The price difference between light-duty and heavy-duty mailing tubes is usually small, but the additional protection can help prevent costly damage to your item. Spending a little extra on added protection is often worth investment.

Types of Mailing Tubes Available

Kraft Mailing Tubes
- Made from natural brown kraft paper.
- Strong, recyclable, and eco-friendly.
- Gives a clean and professional look.
- Best for businesses that value sustainability.

Heavy Duty Mailing Tubes
- Made with extra-thick walls for added strength.
- Provides maximum protection during shipping.
- Ideal for valuable, fragile, or important items.
- Performs well in rough shipping conditions.

Telescopic Mailing Tubes
- Made of two pieces that slide together.
- Length can be adjusted to fit different items.
- Suitable for shipping products of various sizes.
- Helps reduce the need for multiple tube sizes.

Round Shipping Tubes
- Traditional cylinder-shaped mailing tubes.
- Affordable and easy to find.
- Suitable for most rolled products.
- A simple and reliable option for everyday shipping.

Triangle Mailing Tubes
- Prevents the tube from rolling during storage and shipping.
- Provides good protection for posters, prints, and documents.
- Often does not require extra packaging to keep it in place.
- Helps reduce shipping and handling issues caused by rolling.

Square Mailing Tubes
- The design prevents rolling and keeps packages stable.
- Easy to stack, store, and transport.
- Offers strong protection for rolled items.
- Ideal for businesses looking for efficient storage and handling.

Why Choose Triangle or Square Mailing Tubes?
Unlike traditional round shipping tubes, triangle and square mailing tubes do not roll during handling or transportation. This can reduce damage, improve warehouse storage efficiency, and help carriers process shipments more easily.

Common Mistakes to Avoid When Buying Mailing Tubes

• Wrong diameter: Choosing a tube with the wrong diameter can cause items to crack, crease, or become damaged.
• Too-weak tubes: Using weak tubes may result in crushing or bending during transit.
• Poor end caps: Even a strong tube can fail if the end caps do not fit securely.
• Tubes that are too long: Excess empty space allows items to slide around and increases the risk of damage.
• Ignoring shipping methods: Couriers, postal services, and freight carriers handle packages differently, so choose packaging accordingly.

Fix: Measure carefully, choose a tube that matches your item, and test your packaging before placing a large order.

Conclusion

Choosing the right mailing tubes depends on two factors, selecting the correct size and making sure it is strong enough for the shipping journey. A well-chosen tube protects your product through every stage of transit, reduces the risk of damage, and creates a better experience for your customers.

Whether you are shipping standard documents, posters, artwork or other rolled items, it's important to choose a tube that matches the products and shipping conditions. Take the time to understand your packaging needs before purchasing, you can help ensure your item arrives safely and in good condition.

Need help selecting the right mailing tube? Packaging HERO offers kraft mailing tubes, heavy-duty mailing tubes, triangle tubes, and telescopic tubes for a wide range of shipping applications.

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