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Board Backed Envelopes

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Protect your important documents when posting by using our recyclable and durable board backed envelopes. These envelopes are ideal for protecting invoices, bills, legal documents, photos and artwork.


The basics:

  • Thick grey board used to protect your important documents
  • Easy to use peel and seal strip for secure closure
  • Includes ‘Please do not bend’ printing to ensure your mail arrives flat
  • Made with recycled materials and is also fully recyclable
Want same day dispatch? Order in the next:

Orders received before 3pm on a Friday will be dispatched same-day for delivery on the following Monday. Orders received after 3 pm on Friday will be dispatched on the following Monday, using a next working day delivery service.

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Width x Length

Units Per Pack
Unit price from
  • Unit
  • Pack
1-4 Packs
5-9 Packs
10-24 Packs
25-39 Packs
40+ Packs
Enter no. of units
C5 162 x 229mm
No. of Units:
C4 229 x 324mm
No. of Units:
C3 324 x 457mm
No. of Units:

Need Board Backed Envelopes?

Board backed envelopes are a must-have item if you’re sending out important documents or any item that needs to be protected from folding or creasing. Strong, durable, and sturdy, this type of packaging envelope resists bending and keeps your documents safe.

At Smith Packaging, we provide A4 board backed envelopes, as well as A3 and A5 options (in the envelope world, these are called C3, C4, and C5 sizes). You’ll also find bubble wrap envelopes and business card envelopes in our collection, too.

Whether you’re sending confidential documents, photographs, or other important information, you can rest assured that our board backed envelopes are of the highest quality, won’t bend, and will be delivered quickly.

Buy Board Backed Envelopes from Trusted Envelope Suppliers

There are many different types of packaging envelopes, so you may be asking yourself which ones you need. Well, look no further! At Smith Packaging, we provide a range of package envelopes for sale throughout the UK, including:

  • Board backed envelopes
  • Bubble wrap envelopes
  • Business envelopes

Board Backed Envelopes

Sending something important? Our range of board-backed envelopes comes in three different sizes to suit your needs. Protective and easy seal with a clear ‘Do not bend’ statement, all these high-quality envelopes are made from recycled materials and can be recycled. With prices starting low and with speedy delivery, you’ll have these envelopes in your hands in no time.

Buy board backed envelopes.

Bubble Wrap Envelopes

Bubble envelopes are perfect for sending smaller items that need to be protected, so you (and your recipients) have the peace of mind that goods will arrive safely. Our quality range of bubble wrap envelopes include white and gold colours and five different sizes. Worried about how eco-friendly bubble wrap is? You don’t need to be – all materials can be recycled. (Just don’t forget your packaging labels!)

Shop bubble wrap envelopes.

Business Envelopes

What business doesn’t have business envelopes? An essential item of business stationery, these business card envelopes provide privacy with an opaque interior, are strong and close securely. Available in three different sizes, these envelopes start from just 1p.

Buy business envelopes.

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