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Mishel K. · Verified · 16 Jun 2026
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Large Letter Packaging
Consider shipping Large Letter Packaging by Custom Boxes UK and get efficient yet budget-friendly packages. Its size and shape were modeled after the Royal Mail large letter requirements and these slim boxes are durable enough to carry a wide variety of different items including books, clothing, small electronics, etc.
Large letter boxes that meet Royal Mail requirements or extra large letter packets with a little added flexibility, our choices are ready to deliver your products safely at the lowest costs. We also sell parcels letter boxes ranging in size, these come as a flat-pack or already put together and supplied with self-seal strips and tamper-evident design.
Available at wholesale prices in large letter packaging, the boxes are ideal in subscription-based companies, e-commerce-based firms, and direct-mailing campaigns.
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Send your specs and get professional pricing back within 2 hours on business days.
Product Specifications
| Box style | Large Letter Packaging |
|---|---|
| Dimensions | All custom sizes and shapes |
| Minimum quantity | 100 boxes |
| Board | Greyboard 1.5mm – 3mm |
| Wrap stock | 128–157gsm art paper, kraft, or textured |
| Closure | Two concealed neodymium magnets |
| Format | Assembled or collapsible |
| Printing | Offset and digital, CMYK + spot colour |
| Lamination | Matte, gloss, or soft touch |
| Add-on finishes | Spot UV, foil, embossing, debossing |
| Inserts | Foam, EVA, pulp, card — velvet or silk lined |
| Proof | Free digital proof, sample on request |
| Turnaround | 12–15 business days after approval |
| Shipping | Flat rate, tracked |
Customization options
Offset Printing
Digital Printing
Pantone Colors
Soft Touch Lamination
Spot Gloss UV
Hot Foil Printing
Blind Embossing
Window Patching
White Kraft
Natural Brown Kraft
Textured Paper
Grey Chipboard
Product details
Get Big Letter Packaging to Maximize Savings
Smart shipping entails reducing the expenses without compromising the safety. Our Large Letter Packaging is designed to emulate the requirements of the Large letter boxes Royal Mail. So that you can send items at a cheaper price. Their boxes are thin, strong and snazzy-looking, ideal to pack the products that do not require big packaging but should survive the shipment.
All the boxes deliver perfectly at the door via a normal UK letterbox, making them especially suited for e-commerce merchants who need a cost-effective way to appear professional.
Suitable On Royal Mail Extra Large Letter Packaging
The Royal Mail approved, Large letter box size is specially made to suit the shipping requirements in the UK with good presentation.
Product Highlights:
-
Aligns with the large letter requirements established by the Royal Mail.
- Carries small books, clothes, documents or goods
- Finished in kraft, white or printed varieties
- Light and recyclable
We also have extra large letter packaging, which provides depth of bulky yet still letterbox friendly products.
Online Sellers Wholesale Value
Buy-in large quantities? The possibilities of big-packaged letters are very economical to business shipping in bulk. You may order ready-to-use boxes or pick and choose custom sizes and prints.
We also have Large Letter boxes for parcels which comes along with:
- Self locking flaps or peel and seal closures
- Removable inserts to fragile items
- Easy storing flat-pack design
- Full-colour printed branding prospects
Reasons to Choose Custom Boxes UK
There are several reasons to choose us for Large letter packaging wholesale. As we are offering these packaging options from years, Therefore, our clients will get the following benefits,
- Royal Mail–compliant packaging
- Quick lead times & bulk pricing
- Custom print and eco-friendly material options
- Trusted by UK retailers and subscription brands
Use Large letter boxes Royal Mail and make your package smart, slim, and stylish with Custom Boxes UK, packaging that was designed with a smart business in mind.
Frequently asked questions
What is the minimum order for Large Letter Packaging?
100 boxes. Per-box pricing drops at 500, 1,000, and 5,000 units, so ask for tiered pricing if you expect to reorder.
How long does an order take?
12–15 business days from approved proof to dispatch. Rush production is available on request for an additional charge.
How long does an order take? Can you help with the design?
Yes. Our design team prepares dielines, sets up your artwork, and produces the proof at no cost, whatever the order size.
Do you provide samples before production?
very order includes a free digital proof. Physical samples of your exact box can be produced on request before the full run.
Which payment methods do you accept?
Credit and debit cards, PayPal, and bank transfer. Larger runs can be split into a deposit and a balance on dispatch.
Are the materials eco-certified?
Boards are FSC-certified, and inks, coatings, and adhesives meet food-contact standards where the box needs it.
Still have a question?
We reply within 2 hours on business days — email us or call your dedicated representative.
Contact our team →
Large Letter Packaging
From
$0.10
per box · MOQ 100