Cardboard Boxes for Packing & Shipping – Single, Strong & Double Wall

Choosing the Right Cardboard Box for Your Products

Every business uses packaging differently, so the best box depends on what you ship and how often you send parcels. Our range covers light, medium and heavy items, giving you a choice between single wall, strong single wall, double wall and Royal Mail-friendly boxes. Each type serves a clear purpose, helping you protect goods properly while keeping postage costs under control.

Single wall cardboard boxes are ideal for lighter products such as clothing, gifts, accessories and household goods. They are easy to pack, cost-effective and perfect for regular ecommerce orders.

Strong single wall boxes offer a higher level of rigidity for medium-weight goods, candles, beauty sets, craft kits, multipacks and items that need firmer outer protection. They feel close to double wall in strength but remain lighter and more efficient for shipping.

Double wall cardboard boxes are best for heavy, fragile, bulky or high-value items that need maximum crush resistance. They are an excellent option for fulfilment warehouses, storage use, removals and courier shipments that travel long distances.

Royal Mail postal boxes are designed around Small Parcel and Large Letter rules, giving you predictable postage prices and a tidy presentation for subscription boxes, craft items and marketplace orders.

What Size Cardboard Box Should You Choose?

Choosing the right size box makes a big difference to how well your products travel. The box should be large enough to fit your items after they have been wrapped or padded, but not so big that the contents move around or need excessive void fill. A close fit gives better protection, keeps parcels neat and helps control courier costs.

Below is a quick guide to some of our most popular cardboard box sizes and what they are commonly used for. This includes single wall, strong single wall and Royal Mail postal sizes to help you pick the best option for your products.

Popular Cardboard Box Sizes & Uses

If you are unsure which size to choose, measure your items with the protective wrap included, then allow a small buffer for padding. This gives a snug fit, prevents movement during courier handling and keeps your overall parcel weight efficient for postage.

Single Wall vs Strong Single Wall vs Double Wall

Each wall type has its own advantages depending on your product weight and the level of protection required:

• Single wall: best for light to medium items; cost-effective for frequent orders.
• Strong single wall: increased rigidity, firmer corners and better crush resistance; ideal for medium-weight goods.
• Double wall: maximum strength for heavy, fragile, industrial or long-haul shipments.

If you regularly receive courier damage, upgrading from standard single wall to strong single wall can noticeably reduce dented corners, crushed edges and returns.

Packing Tips for Safer Deliveries

Good packing reduces damage, improves presentation and improves customer satisfaction. A few simple steps can make a big difference:

• Wrap delicate items individually before placing them in the box.
• Use kraft paper, bubble or tissue to fill gaps and protect edges.
• Distribute weight evenly so the box stays square and balanced.
• Seal the base and top using strong packing tape; use an H-pattern for added strength.
• Use the correct size box to avoid crushing or movement in transit.

Courier Suitability & Shipping Guidance

All boxes in this collection are suitable for major UK couriers, including Royal Mail, DPD, Evri, Yodel, UPS and DHL. Using the right wall strength for your product weight helps prevent crushed corners, split seams and delivery damage. If your parcels travel long distances or carry higher value items, choosing strong single wall or double wall can provide much better performance during handling and stacking.

Sustainability, Recycling and Customer Expectations

Every box in this range is made from recycled cardboard and is fully recyclable, biodegradable and compostable. Many customers now look for plastic-free packaging as part of their buying decision, so using cardboard boxes helps your brand meet environmental expectations. Boxes can be flattened and recycled through standard household collections, making them one of the simplest eco-friendly packaging choices for both businesses and customers.

Moving Boxes for House Moves

If you are preparing for a house move, this collection also works perfectly as a reliable set of moving boxes. The stronger single wall and cube sizes give good protection for clothing, books, homeware, kitchen items and mixed household goods, while the double wall options are ideal for heavier loads. All boxes are supplied flat-packed, easy to label and simple to stack in vans or storage units, making them a practical choice for removals and home moves of any size.

Trade Supply, Bulk Orders and Regular Stock

We supply thousands of UK businesses each month, from small home sellers to growing fulfilment centres. Multi-buy and wholesale options are available across the full cardboard box range, and we can help plan regular supply for busy periods or long-term operations. If you need pallet quantities, mixed sizes or repeat orders, our team can arrange quick quotes and reliable stock.

For trade enquiries, contact us on WhatsApp: +44 7450 981838 or email info@mrbags.co.uk. Click & Collect is available from 10A Locket Street, Manchester, M8 8EE.

Why Choose Us for Cardboard Boxes?

We keep all sizes in UK stock for fast dispatch, with same-day shipping available Monday to Friday. Every box is made from recycled cardboard and packed flat for easy storage, giving you a practical and eco-friendly solution for daily packing. Our team is based in Manchester and provides quick support through WhatsApp and email, whether you need size advice, trade quantities or help choosing the right wall strength. We also offer click & collect for local customers who need boxes urgently.

Recommended Packaging to Use with Cardboard Boxes

A well-packed box needs the right supporting materials. Many customers also choose:

• Packaging Tape – clear, brown and fragile options for secure seals.
• Thermal Labels – courier-ready labels for smooth dispatch.
• Mailing Bags – ideal for lighter items or as a waterproof outer layer.
• Bubble Wrap – protection for fragile and delicate goods.
• Crash Lock Boxes – for faster packing and quick-lock bases.

Are These Cardboard Boxes Right for Your Business?

If you want sturdy, reliable and eco-friendly packaging that is suitable for everyday UK shipping, this collection covers every common need. Whether you send lightweight online orders, medium-weight goods that need stronger protection or heavier items that require double wall strength, you will find the right option here. These boxes help reduce damage, streamline packing and keep your parcels looking professional from warehouse to doorstep.