Sizes, inserts, print & more
UK Trade Supplier
Tailored pricing on all orders
More than 25 years experience
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
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).
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
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
Weights / Charges
Single / Double
Kraft / White
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.