Self Seal Postal Boxes

Make packing simple with our self-seal postal boxes. Lightweight, versatile and ever-so effective, these boxes will revolutionise your packaging operation. With a peel-and-seal closure and a tear-open strip, your parcels get added protection and offer an excellent unboxing experience.

Made from 100% recycled and recyclable materials, these boxes are also home-compostable and biodegradable.

If you are looking for something a little different, a unique size or printed packaging, we can produce a custom solution for you.

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Day Delivery

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Delivery Slot

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Learn more about Self Seal Postal Boxes

At Packaging Supplies, we’re passionate about all things plastic-free. We’ve included a little “plastic-free, recycle me” note under the tear-open strip of these self-seal boxes, reminding your customers that this packaging protects the planet. 

This packaging range is slicker than standard 0201 style cardboard boxes and is designed with maximum functionality in mind. The peel-and-seal strip makes packing lightning-quick and ideal for large packaging operations. They also save you money, since you won’t need to buy extra packaging tape to keep them secure.

Made from single-wall corrugated cardboard, our quick seal postal boxes are tough, eco-friendly and supremely easy to use. They ship flat, unassembled, and as one piece of cardboard, making them packable in under 10 seconds.

Postal Boxes Pricing and Proportion Sizes

Where applicable, we also include the Royal Mail PiP (Pricing in Proportion) mailing guide, which will help you estimate delivery costs by box size. Using the guide, you’ll be able to select the most appropriate box size for your products and calculate your postage costs before you order your packaging.

For reference, the brown postal boxes in this range fall into a small parcel bracket, which has the maximum dimensions of 450mm (L) x 350m (w) x 160mm (H) and a maximum weight of 2kg.

Buy Eco-friendly Packaging Supplies Online

Give your packaging a boost with our plastic-free postal boxes made from recycled materials, or check out our online shop and discover more eco-friendly packaging options. Free UK mainland delivery on all orders.

packaging solutions

Expert packaging suppliers for over 40 years, with an emphasis on plastic-free packaging

In the late 1970s, two friends and colleagues, Tim Allen and Stewart Middleton saw a gap in the market for a different type of packaging supplier. At the time, other businesses were selling custom made boxes and stocking packaging consumables, but Tim and Stewart wanted to offer more than that. They wanted to give their clients additional services, such as warehouse storage and the ability to have their packaging delivered as and when it was required. Packaging Supplies was established, and the rest is history.

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