When it comes to packaging, not all boxes are created equal.

One critical factor that determines the strength and durability of a box is its board grade.

Why is it important to know? Because choosing the right board grade from your corrugated packaging provider ensures your box protects your goods effectively during transit. As well as this, it keeps costs to a minimum.

What is Board Grade?

Board grade refers to the classification of cardboard or corrugated board based on its strength, thickness, and material. It essentially tells you how strong and durable a box is. This is crucial depending on what you intend to pack and ship. Different industries, as well as the content within the box, require different board grades to ensure products arrive safely without damage.

Common Types of Board Grades

Single Wall Board (Single Wall Corrugated)

• This is the most common and economical type of box board.
• It consists of one layer of fluted corrugated paper sandwiched between two flat linerboards.
• Ideal for lightweight to medium-weight products.
• Commonly used for shipping consumer goods, small electronics, and retail packaging.

Double Wall Board (Double Wall Corrugated)

• Double wall boxes are made from two layers of fluted corrugated medium with three linerboards.
• Offers significantly more strength and durability than single wall.
• Suitable for heavier, fragile, or bulky items.
• Often used for industrial goods, bulk packaging, and products requiring extra protection.

Triple Wall Board (Triple Wall Corrugated)

• Composed of three layers of fluted medium separated by four linerboards.
• Provides the highest level of strength and impact resistance.
• Used for very heavy or oversized items such as machinery parts or large appliances.
• Often a costlier option, but essential for extreme durability.

How Board Grades Are Measured 

Board grades are typically measured by the weight per square meter (gsm) of the liner and fluting papers and the thickness of the combined board, often expressed in millimetres or inches. A higher gsm and thicker boards generally mean stronger packaging.

Additional industry standards like the Edge Crush Test (ECT) and Bursting Strength Test provide numeric ratings on how much pressure a board can withstand. For example, an ECT rating of 32 lbs per inch is common for strong single wall boxes used in e-commerce shipping.

Using Used Boxes Without Compromising Board Grade 

At Reuseabox, we specialise in providing high-quality used packaging that meets the exact same board grade standards as new boxes. That is because using a used box does not impact the board grade, as the strength and durability depend on the original material. Not on whether it’s been previously used.

This means businesses can enjoy significant cost savings by choosing used boxes without compromising on product protection or quality. Plus, opting for used packaging helps to reduce waste and conserve resources. Alongside this, it adds more to your bottom line and reduces the cost of dispatching products.

Why Choosing the Right Board Grade Matters

• Protection: The right board grade ensures your product is adequately protected from damage during transit or storage.
• Cost Efficiency: Using a stronger board than needed can inflate packaging costs unnecessarily. As well as this, a weaker board can result in product damage and returns.
• Brand Reputation: Delivering products in good condition enhances customer satisfaction and builds trust.

Our Expert Tips for Selecting the Right Board Grade

• Assess the weight and fragility of your product.
• Consider the shipping method and distance. Longer or rougher journeys need stronger boards.
• Match the board grade to the stacking requirements if products are stored or shipped in pallets.
• Always request samples and test boxes under real conditions.
• Partner with suppliers – just like us – who can provide clear specifications, quality assurance, and environmentally responsible packaging options.

Whether you’re a small business shipping products or a logistics manager handling bulk goods, choosing the right board grade protects your investment and optimises costs.

For more information on our range of new and used boxes that meet all board grade standards, browse our website.