Buy our White PiP Small Parcel Mailing Boxes (400mm x 330mm x 40mm) which are strong, lightweight, simple to assemble and offer a great simple professional packaging solution for all types of ecommerce. Ecommerce retailers buy our single wall White PiP (Pricing In Proportion) Small Parcel Postal Mailing Boxes if you need your goods to fall in to the Royal Mail's Small Parcel category. Our white small parcel mailing boxes to buy are also available in bulk should you need to buy larger quantities for ecommerce.

All of our professional Royal Mail Small Parcel white cardboard boxes are manufactured from single wall cardboard which comes with a high-quality white outer and white inner colour to make parcels uniform and stand out. Based on our own experience, it is important that your products are not just well packaged, but that the cardboard packaging itself is representative of the quality of your products. Our 400x330x40mm sized postal boxes are just one product that is perfect for making the right impression on your customers.

Here at Parcelsend UK, we would always advise customers ordering any of our white parcel boxes to secure them with clear, high quality packaging tape - all of which can be purchased directly from us. Click here to view our range of packaging tape. Not only will this promote your business brand as more professional, it will add value to your shipped goods improving the overall experience for your customers.

Pricing in proportion (PiP) sizes

All of our carboard white postal boxes can be identified using Royal Mail’s Pricing In Proportion index. This White PiP Small Parcel Postal Box - 400x330x40mm box specifically falls into the "Small Parcel" category.

Product Features of our White Small Parcel Postal Boxes - 400mm x 330mm x 40mm

• Highly presentable & quick to assemble white cardboard boxes.
• High quality single wall corrugated boxes, perfect where presentation matters.
• Saves storage space as our 400mm x 330mm x 40mm size parcel boxes are delivered flat-packed.
• Lightweight but sturdy small parcel cardboard boxes.

Product Details

• Colour - White outer & white inner.
• Internal Dimensions (L x W x H) - 400x330x40mm / 40x33x4cm / 15.7x13x1.6 Inches.
• External Dimensions (L x W x H) - 423x338x45mm / 42.3×33.8×4.5cm / 16.7×13.3×1.8 Inches.
• Box Style Type - Tuck-In-Flaps.
• Corrugated Fluting - R flute – 2.3mm.
• PiP Size - Small Parcel.
• For size guidance only this would replace the Kite Packaging code - CSW400X330X40-PBX14.
• Parcelsend UK SKU - MCP-PiP400WH-RM-PSUK, MCP-PiP400WH-RM & PiP400WH-RM.

Please note: branding/barcodes may appear on parts of the cardboard box. Images are for reference purposes only and there may be slight variances to the product supplied.

Due to manufacturer tolerances, actual item dimensions may vary by 10–20mm. If precise sizing is important for your project, we strongly recommend requesting a sample before placing your order.

All of our products are manufactured and dispatched right here in our own UK warehouse, which means we can offer some of the fastest turnaround times in the country. And because everything is produced in the UK (unlike many other providers), you’ll never have to worry about customs delays or surprise charges. Delivery is calculated at checkout based on order value - free over £100, from £6.95 under that or select Next Day delivery upgrade for only £9.95. All orders are shipped flat-packed for maximum efficiency.