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Extra flat brown postal boxes

From  £0.20  ex. VAT
See prices
Next day delivery
  • Fits Royal Mail post boxes & household letter boxes
  • Economise on your postal costs
  • Manufactured in micro-flute board
  • Delivered flat packed for easy assembly
  • Sold in packs of 50, priced per box
Read more …
Price per quantity break
This product is available in 5  references



colour pack
Price ex. VAT per box Up to
25% Off
50 +100 +200 +500 +1000 +
MBD01B 1409020brown500.
MBD02B 16512020brown500.320.
MBD03B 22515020brown500.360.320.300.280.27
MBD04B 25516020brown500.370.330.310.290.28
MBD05B 30522020brown500.380.340.320.300.29
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Detailed description

Extra flat boxes ideal for posting products up to 20 mm thick

Especially formatted to fit standard Royal Mail post boxes and household letter boxes these extra flat postal boxes have been manufactured in micro-flute.

These boxes allow you to send your small volume and flat products whilst economising on your postal costs. Also available in a white finish.

Delivered flat packed for easy assembly. All dimensions are internal mm.

To find the right box for your products, call us on 0800 542 44 28, talk to our packaging specialists and get next day delivery.

QuantityAvailable in packs of 50 boxes. Want to order in bulk? See our discounts for 2 or more packs.

Size and shape optionsThese extra flat cardboard postal boxes start at 140x90mm (LxW) and go up to 305x220 mm (LxW). All height measurements are 20mm.

Weights and limits These boxes provide ideal protection for light and flat products.

Materials Manufactured from microflute.

Delivery information Delivered flat-packed in packs of 50.
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Customer reviews
Most recent customer reviews
Very happy. Needed a box to send out products that needed more than a postal bag. These are perfect as they still allow posting to go out large letter - and customers receive products through their letter box still. Everyone happy
By Angela on 08/02/19 11:01 - Verified Purchase by TrustPilot
Reference : MBD04B
Great size for large letter postal serivce.
By Katherine on 24/09/18 08:48 - Verified Purchase by TrustPilot
Reference : MBD05B
Use these all the time. Good strong boxes that keep products safe.
By Rosemary on 09/08/18 10:58 - Verified Purchase by TrustPilot
Reference : MBD05B
Good product exactly as described on the web site did not have to get on touch, ordered, paid for on line, delivered on time. All good thank you
By Brian on 07/05/18 21:43 - Verified Purchase by TrustPilot
Reference : MBD01B
Very good product, came in good time
By Anuja on 15/12/17 07:57 - Verified Purchase by TrustPilot
Reference : MBD03B