White Cardboard Boxes

Made From 400gsm Material

Single Wall Cardboard

Folding Flap Closure

Flat Pack Design

Free Sample Available

Understanding Box Dimensions

Box dimensions are typically listed in the following order:

Length: The longest side of the box.
Width: The shorter side, adjacent to the length.
Height: The vertical dimension when the box is placed upright.

Royal Mail Parcel Classifications (UK)

Royal Mail categorises parcels based on size and weight:

Parcel Type	Maximum Dimensions	Maximum Weight	Common Uses
Small Parcel	45cm x 35cm x 16cm	2kg	Books, small gifts, gadgets
Medium Parcel	61cm x 46cm x 46cm	20kg	Bulkier items, shoes, clothing
Large Parcel	Length: 1.5m, Girth: 3m (L + 2W + 2H)	30kg	Furniture, large shipments

Sealing Types

Flap and Tape: Secure with packing tape. Ideal for heavier contents.
Self-Seal Adhesive: Quick and easy to use. Suitable for lighter packages.
Snap-Lock Bottom: Provides extra support for heavier goods.
Double-Layer Flaps: Reinforced for added durability during transit.

Still Need Help? Get in touch with our team at sales@postalpackaging.com, and we’ll be happy to assist.

Product Code: LU20020080WB ISBN: 8435605332133

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Custom Printing Available > Personalised Designs with Fast Turnaround

These single-wall white cardboard boxes are engineered for optimal protection and efficiency with high quality board materials making them the ideal choice for reliable packaging solutions. Crafted from high-grade fluted cardboard with a white exterior, these boxes are the perfect solution for safeguarding your goods whether in storage or transit to your customers.

Our white cardboard boxes are not only sturdy but also versatile with a multi-score height built in making them a new innovative way to pack your parcels.

Hear from Our Customers

See why we’re trusted as the UK’s go-to for packaging and envelopes from verified Trustpilot reviews.

BeverleyTrustpilot Review

A proper online shop, just what you want, easy to find, easy to use. I didn't jump here first but now wish I had for sure. Prices are excellent too, am delighted with the professional finish and will recommend and use from now on.

EmmaTrustpilot Review

Really excellent friendly customer service and product (biodegradable transparent bags) is first class. Delivery super speedy. Highly recommended. Thank you

RichardTrustpilot Review

I purchased some flat pack cartons but was unsure how to assemble them. I sent an email asking for help & promptly, a very helpful young lady created an extremely helpful, bespoke video for me to show how to do it.

GailTrustpilot Review

Very simple website to use, good quality, well packed
and very quick.

KateTrustpilot Review

Easy to use website and fast delivery

JohnTrustpilot Review

Great and fast delivery, thank you!

Who Are Postal Packaging?

Postal Packaging are a UK based packaging supplier providing sustainable, premium packaging solutions for every size of business. With over 20 years’ experience and industry specific product knowledge our specialist team can deliver a value-added service to all our customers in the UK marketplace. Our centralised warehouse facilities in Wales stocks a wide range of diverse packaging products ranging from Capacity Book Mailers, Board Back envelopes, Kraft Corrugated Bags and much more in addition to offering a bespoke design and printing service. Our products offer perfect postal protection for transit ensuring your items are received securely by your customers.

White Cardboard Boxes

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White Cardboard Boxes

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