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GWP Packaging

Corrugated cardboard packaging expertise and innovation

GWP Protective

Widest range of protective cases with custom foam in the UK


UK leading independent Correx® packaging manufacturer

GWP Conductive

Providing cutting edge ESD safe packaging for 30+ years

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Supplying sheet plants with coated corrugated material

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A range of strategies and ideas to reduce your ongoing packaging costs

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Protection for your products and equipment to prevent costly damage in transit

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Streamline your operations, enhancing efficiency and productivity

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Minimise the environmental impact of your packaging and business

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Large Parcel Boxes

Custom design

Tailored to your requirements

UK trade supplier

Huge product selection

Reduce costs

Range of strategies and services

Large parcel boxes (PIP)

Corrugated Mailers / Postal Boxes

Supplier of PIP compatible packaging to UK businesses

Large parcel boxes, as defined by the Royal Mail PIP guidelines indicate packaging box dimensions cannot exceed 1500mm (1.5 m) in any direction. The guidelines offer scope for customisation to optimise costs beyond simply meeting a specific pricing band however.

GWP Packaging has been manufacturing corrugated boxes that meet the PIP criteria, but also reduce your business costs through correct material and sizing, whilst not compromising protection. Read More

Available Colours:

Brown Kraft cardboard material swatch
White cardboard material swatch
Cardboard with single colour print swatch
Full colour printed cardboard swatch
  • No obligation (and no pressure) quotes for any packaging
  • Free and impartial advice from UK based experts
  • Competitive pricing and full customisation options
FSC logo applied to Packaging manufactured by GWP (certificate FSC_C161914)

This product
can be
FSC® certified
on request


Detailed info on Large Parcel Boxes

As the name would suggest, large parcel boxes are a good solution to consider if you send high volumes of larger parcels via the Royal Mail or other courier / postal networks.

With the guidelines indicating that the length of the boxes must not exceed 1.5 metres to gain the preferential shipping price (or length / depth combined not being more than 3 metres), what it also allows for is a wide range of bespoke sizes within this range.

In fact, it makes sense to source large parcel boxes that are tailored to your specific requirements for a number of reasons. Firstly, a custom size will minimise material usage, and will also eliminate the need or excessive amounts of void fill (both of which increase your business’ costs).

Bespoke Large Parcel Boxes

Custom sized postal boxes also tend to provide greater levels of transit protection (as they minimise the contents movement during handling / transportation), whilst selecting a suitable material grade (either single or double wall cardboard) also means a box that is as cost effective as possible, whilst providing a suitable level of performance too.

Besides selecting a material for performance purposes (GWP will be happy to advise the best option for your specific application / product), it also allows you to influence the appearance too.

You can select an organic appearing kraft / brown finish, or a premium white material. Both of these can be further enhanced with a range of printing options, plus specialist coatings that can add pantone colours, resistance to water and even anti static properties.

The size of the large parcel boxes also means they can be easily modified with the inclusion of special fittings and dividers (either fixed or adjustable), which further improve protection, whilst adding flexibility and aiding packing too.

This makes these PIP compatible boxes perfect for a wide range of business types, including those selling or shipping clothing, small appliances, food / drink, consumer electronics and much else besides.

Key features of Large Parcel boxes at a glance

  • Sizes up to 1500 mm (1.5m) in length, or under 3m combined length / depth
  • Bespoke sizes within these limits can provide cost savings / performance gains
  • Material grade selected based on your products / applications (single or double wall)
  • Excellent protection from damage
  • Typically utilises a cost effective, 0201 style
  • Eco friendly kraft (brown) or high quality white surface finish
  • Available with integrated / removable dividers and inserts
  • Further customisation through print and specialist coatings


Large Parcel Box technical details

Please use the tables below for the specific dimensions / weights etc. that apply to large postal boxes

Max External Sizes

>610 mm
>460 mm
>460 mm

Weights / Charges

30 Kg


Single / Double
Kraft / White

Tailored Pricing / Sizes

Cost effective packaging for shipping orders

GWP Packaging is a manufacturer of corrugated packaging, producing all items that we sell as bespoke to the requirements of your business.

Whilst this means we are not able to supply low volumes (we would recommend online sellers or merchants for this or individual requirements), it does mean that any business looking for the most cost effective option, or to reduce their current costs, can see significant benefits.

This is also why we do not list prices on this website. All quotes – like our products – are tailored to exactly what you need, meaning you don’t pay for excess material, features you don’t need, or packaging that isn’t perfect for your business. Plus, each and every quote is free, no obligation, and can be supplied with accompanying advice from a team of experts.

Customisation / Options

Range of print, surface finish and insert options

There are a number of ways in which you can enhance the appearance and usability of your large parcel boxes (or indeed any packaging supplied by GWP).

This includes a range of print effects to add branding or important information, various inserts to improve both protection and packing efficiency, and even specialists finishes such as water resistance to enhance the performance and longevity of your boxes.

Foam end caps

Foam End Caps / Padding

Highest levels of transit protection

Cardboard box dividers inside outer corrugated packaging

Adjustable Divider Sets

Enhance space and packing efficiency

Integral fittings

Integrated Fittings & Inserts

Improve protection & presentation

Waterproof cardboard packaging

Water Resistant Coating

Protect your deliveries from rain and moisture

Printed large parcel boxes

1, 2 or Full Colour Printing

Add logos, graphics, instructions and more

Similar PIP Boxes

Similar options for your postal packaging

Large letter boxes

Large Letter Boxes

PiP Box colours

450 x 350 x 160mm
Max Size (L x W x D)

Small parcel boxes (PIP)

Small Parcel Boxes

PiP Box colours

450 x 350 x 160mm
Max Size (L x W x D)

BDCM box

BDC / BDCM Boxes

PiP Box colours

7 Standard Sizes
Enquire for details

Medium parcel boxes

Medium Parcel Box

PiP Box colours

610 x 460 x 460mm
External (L x W x D)

PIP boxes

View All PIP Boxes

Click here to see the full PIP boxes / packaging range

Postal packaging boxes and mailers

View All Postal Boxes

View all available postal packaging options

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    John Elliott

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    01793 754 444

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    Bill Chapman

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    Ian Heskins

    New Business Director
    01793 754 444

    Phone GWP Packaging

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    Need to ship orders or goods, but not sure Large Parcel Boxes are what you need? See other postal packaging here...