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Slim 1-Piece Flat Black Corrugated Postal Box

34054 in Stock
£1.19 £0.99
Product Dimensions
322 x 180 x 20

High quality black mailer box accepted by the Royal Mail as a large letter gift box. This box is ideal to use as a monthly subscription box.We recommend using packing tape for added security when mailing this item.Please note that all measurements are internal.Sorry printing is not available on this Black Postal Box. Read more

UK MadeEco FriendlyRecyclableLarge Letter Friendly

UK Made

Products with our 'UK made' symbol indicates the products have been designed and manufactered in the United Kingdom.

This is a product with a low carbon footprint and supports our local British industries.


Products with our recycled symbol, indicates that this product is made from recycled materials.

The recycled content can vary product to product, ranging from 40-99%.

To find out in detail the stats of this product please get in touch with our customer services team.


Products with the recyclable symbol indicates that this item can be fully recycled throughout the UK.

Some items with features such as magnets, ribbon or inserts would need removing before recycling.

To find out if this item can be recycled outside the UK, please contact your local council.

Letterbox Friendly

Products with the Letterbox friendly icon indicates that this item will fit through a letterbox once packaged.

Please note; for these to fit through the letterbox, outer packaging would need to be small enough such as a mailing bag or envelope.

The maximum package depth for Royal Mail standard letterbox is 25mm.

  • Standard
Configure & Purchase Quantity
  • 10 £9.50(£11.40 Incl. VAT) -4%
  • 50 £45.50(£54.60 Incl. VAT) -8%
  • 100 £85.00(£102.00 Incl. VAT) -14%
  • 300 £240.00(£288.00 Incl. VAT) -19%
  • 1000 £770.00(£924.00 Incl. VAT) -22%
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Plant a tree - eco is awesomeSupport reforestation by completing your purchase

We're thrilled to be working with Tree Nation to help plant the trees to give back to the Earth. Which is even more important in the packaging industry to give back what we receive from the planet.

Tree-Nation is a home to 92 planting projects from 33 differents countries. You can choose to add Plant a Tree at checkout for only £1 to help do you bit for the planet. Tree-Nation is a non-profit organisation that allows citizens and companies to plant trees all around the world and offset their CO2 emissions. 

Trees are key pillars of the world for both humans and the environment. They benefit us by purifying water, air and creating better social conditions. They benefit the environment by providing homes for various forms of life, cooling our climate and improving our soil. Offset your packaging by giving back to the planet.

Product StylesDesigned to fit your every need
  • Compostable Suitable for home or industrial composting.
  • Recyclable Fully recyclable.
  • Recycled Made with 62% recycled material.
  • Flat-Pack Clever flat-pack design to help save space.
  • Dimensions 322 x 180 x 20mm.
Slim 1-Piece Flat Black Corrugated Postal Box
Image Side
Content Side
Pizza Style Postal Boxes
A tough exterior for the safest of deliveries, featuring a pizza box style fastening and stout single-walled corrugated design.
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This black postal box is great for sending gifts or care packages out to family and relatives. Why not send some drawings from the kids, or any craft projects they've been working on? This size box is also ideal as a subscription box for your business. No fuss and easy shipping as this box is accepted by Royal Mail. The box is easy to assemble and secure enough without the need for tape, although why not personlise it with a printed label for added strength and security?
The boxes are single walled and made from corrugated card.
The box can be used as a snacks delivery box for small baked treats.

Sorry printing is not available on this Black Postal Box.