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These Brown Postal Boxes measure 310 x 220 x 100mm and are designed for efficiently sending your medium-sized items. Offering quick and easy assembly, these boxes fit within Royal Mail’s Small Parcel sizing to help reduce postage costs. Easily secure your items with the peel-and-seal strip, removing the need for packing tape, and give your customers a smooth opening experience with the ripper strip. Supplied flat-packed in bundles of 50 for convenient storage, these postal boxes are plastic-free, completely recyclable, and biodegradable, making them an excellent eco-friendly option. Key features: 1 x peel-and-seal strip 1 x easy ripper strip