PIP Cardboard Boxes for Large Letter Postage C4 C5 C6 Mailing Packaging Supplies

📦C6 PIP Box (PIP 1) – 160 x 110 x 20 mm. 📦C5 PIP Box (PIP 2) – 222 x 160 x 20 mm. 📦C4 PIP Box (PIP 3) – 322 x 229 x 20 mm. ✅Strong, Lightweight & Professional-Looking Boxes. 🛒Need More Supplies?. 🛠️Quick & Easy Assembly – Simple fold-up design.

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