We offer a variety of durable Royal Mail PIP Postal Boxes that are perfect for business, online sellers and small retailers who want to save on shipping costs without compromising on quality. Available in both brown and white, these boxes are specifically designed to meet Royal Mail's Pricing in Proportion (PIP) guidelines, ensuring you can send letters, cosmetics, books, documents, and small items securely while keeping postage costs to a minimum. Our available sizes include: C7 Royal Mail PIP Postal Boxes (101mm x 101mm x 20mm) DL Royal Mail PIP Postal Boxes (220mm x 110mm x 20 mm) C6 Royal Mail PIP Postal Boxes (112mm x 163mm x 20 mm) C5 Royal Mail PIP Postal Boxes (218mm x 159mm x 20mm) C4 Royal Mail PIP Postal Boxes (320mm x 230mm x 20mm) Delivered flat packed for easy storage and quick assembly, our postal boxes save valuable space until ready to use. Made from premium corrugated cardboard, these postal boxes provide excellent protection against damage during transit, ensuring your items remain safe and intact. Why Choose Our Royal Mail PIP Postal Boxes? Lower Shipping Costs: Save on postage by using Large Letter boxes that meet Royal Mail’s PIP guidelines, ensuring you pay the lowest possible rate. Reliable Protection: Made from strong, durable cardboard, our postal boxes offer superior protection for your items, reducing the risk of damage during transport. Eco-Friendly Packaging: All of our PIP boxes are made from recyclable materials, providing a sustainable packaging solution. Professional Appearance: The option of white or brown allows you to choose the right finish to enhance your brand’s packaging. Quick and Easy to Use: The flat pack design ensures fast assembly and easy stor