Personalised Letterbox Boxes 222mm x 160mm x 20mm White / Brown

Personalised Letterbox Boxes – 222 x 160 x 20mm (Internal Dimensions)

Create a professional branded unboxing experience with PackGenie's personalised letterbox boxes. Measuring 222 x 160 x 20mm internally, these slim custom printed postal boxes provide a practical packaging solution for suitable flat products, gifts, accessories, printed materials and e-commerce orders.

Our custom printed letterbox boxes combine a low-profile rectangular design with full-colour digital printing, allowing you to showcase your business logo, brand colours and promotional artwork on your packaging.

Made from single-wall corrugated cardboard, these personalised postal boxes are designed for suitable Royal Mail Large Letter applications. The internal height is 20mm, but you must check the fully assembled external dimensions and packed weight before posting.

Choose from white kraft paper outside with brown kraft inside or brown kraft paper inside and outside. Printing options include the inside, outside or both sides of the box, helping you create a consistent branded presentation.

With free artwork preparation, no standard setup fees and free standard UK mainland delivery, these custom printed postal boxes are ideal for small businesses and growing e-commerce brands.

Key Features

• 222 x 160 x 20mm internal box dimensions
• Slim rectangular letterbox packaging
• Full-colour digital printing
• Inside, outside or both-side print options
• Single-wall corrugated cardboard construction
• Micro-flute board described in the original product information
• White kraft outside / brown kraft inside or brown kraft throughout
• Designed for suitable Royal Mail Large Letter applications
• Recyclable corrugated packaging
• Manufactured and printed in the UK
• Minimum order quantity of 50 boxes
• Free artwork preparation from suitable AI or PDF logo files
• No standard setup or origination fees
• Free standard UK mainland delivery
• Express delivery available

Custom Printed Letterbox Packaging for Your Brand

Our 222 x 160 x 20mm printed postal boxes help businesses create distinctive branded packaging for products that fit a slim, rectangular format.

Add your logo, custom artwork or promotional messaging to turn a standard postal box into an extension of your brand identity.

Potential uses include:

• E-commerce orders: Branded packaging for suitable flat products.
• Printed materials: Packaging for appropriately sized stationery, documents and promotional inserts.
• Small gifts: Personalised presentation boxes for suitable items.
• Accessories: Compact postal packaging for lightweight products.
• Subscription boxes: Consistent branded packaging for recurring deliveries.
• Marketing campaigns: Custom printed packaging for suitable sample and promotional packs.

Always check your product dimensions and allow enough room for any protective packaging or inserts.

Royal Mail Large Letter Packaging

These personalised large letter boxes are intended for products that may qualify for Royal Mail's Large Letter postal format.

The maximum limits stated in the original product information are:

• Maximum length: 353mm
• Maximum width: 250mm
• Maximum thickness: 25mm
• Maximum weight: 750g

Important: The 222 x 160 x 20mm dimensions are internal measurements. Royal Mail assesses the fully packed parcel, including the box's external dimensions, contents and total weight.

Avoid overfilling the box or allowing it to bulge beyond the permitted thickness. Always check current Royal Mail requirements before dispatch.

Full-Colour Digital Printing

Personalise your custom printed postal boxes using full-colour digital printing. Add your company logo, brand colours, detailed artwork or promotional messaging.

Digital printing provides flexibility for businesses that want professionally branded packaging in smaller print runs.

Printing Options

• Outside printing: Display your logo and branding on the exterior.
• Inside printing: Add a custom message or design inside the box.
• Inside and outside printing: Create a coordinated branded unboxing experience.

Final print placement and artwork suitability should be confirmed before production.

White and Brown Kraft Finishes

Choose from two kraft paper finishes:

• White outside / brown inside: A clean white exterior for custom printing, with a natural brown kraft interior.
• Brown inside and outside: A natural kraft finish for minimalist and understated branding.

Both options provide a practical base for personalised packaging designs.

Single-Wall Corrugated Construction

These printed letterbox boxes are made from single-wall corrugated cardboard. The original product information also describes the board as micro-flute.

This low-profile construction is suitable for appropriately sized lightweight products. Fragile items may require additional cushioning or protective inserts.

Product Specifications

Delivery note: All delivery lead times begin after approval of your final artwork.

Artwork Templates

Need an artwork template for your 222 x 160 x 20mm personalised letterbox box? Email help@packgenie.co.uk to request the appropriate template.

Free Artwork Preparation

Send us your logo and design ideas and our team will help prepare your artwork for printing.

Free artwork preparation is available from suitable AI or PDF logo files. We'll email a digital proof for you to review before production begins.

You can request changes before approving your final artwork. Once approved, your order can move into production.

Production and Delivery Options

Choose from two delivery options for your custom printed letterbox boxes:

• Standard Delivery – 7–14 working days: Free delivery to UK mainland addresses.
• Express Delivery – 5–7 working days: Additional charges apply.

All delivery lead times begin from approval of your final artwork, rather than the order date.

Complete Your Branded Packaging

Pair your personalised postage boxes with custom printed tissue paper, branded stickers or printed packaging tape to create a coordinated unboxing experience.

These 222 x 160 x 20mm letterbox boxes offer a practical packaging format for businesses looking to present suitable flat products in professionally branded packaging.