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Extra flat white postal boxes

From £0.22 ex. VAT
See prices
Next day delivery
  • Specifically designed to fit standard Royal Mail post boxes and household letterboxes
  • Manufactured in micro-flute, delivered flat packed
  • Provides ideal protection for light and flat products
  • Sold in packs of 50, priced per box
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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 +
MBD01 1409020white500.300.
MBD02 16512020white500.330.
MBD03 22515020white500.420.370.350.330.31
MBD04 25516020white500.440.390.370.350.33
MBD05 30522020white500.450.400.380.360.34

Detailed description

Post products up to 20 mm thick through letterboxes

These extra flat postal boxes have been especially formatted to fit standard Royal Mail post boxes and household letter boxes. 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 brown.

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.

Sold in packs of 50, priced per box.

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

Size and shape options These extra flat cardboard postal boxes start at 140x90 mm (LxW) and go up to 305x220 mm (LxW). All height measurements are 20 mm.

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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