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Q-Connect C3 Envelope 450x324mm Board Back Peel and Seal 115gsm Manilla (50 Pack) KF01409
Q-Connect Envelope 238x163mm Board Back Peel and Seal 115gsm Manilla (125 Pack) KF3518
Q-Connect Envelope 267x216mm Board Back Peel and Seal 115gsm Manilla (Pack of 125) KF3519
Q-Connect Envelope 318x267mm Board Back Peel and Seal 115gsm Manilla (125 Pack) 1K06
Q-Connect C4 Envelopes Board Backed Peel and Seal 115gsm Manilla (Pack of 125) KF3521
Q-Connect Envelope 394x318mm Board Back Peel and Seal 115gsm Manilla (Pack of 125) KF3522
Q-Connect C4 Envelopes Board Back Peel and Seal 115gsm Manilla (Pack of 10) KF3523
Q-Connect C4 Envelopes Board Back Peel and Seal 120gsm White (Pack of 125) KF3525
Blake Everyday Envelopes C4 Manilla Pocket Peel and Seal Board Back 120gsm 324x229mm (Pack 20) - 13935/20
Blake Vita Envelopes C3 White Board Peel and Seal 350gsm 321mm x 450mm (Pack 100) - PPA17-RS
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 190X140mm 115gsm Pack 125 Code 3112 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 324X229mm 120gsm Pack 125 Code 3266 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 444X368mm 120gsm Pack 50 Code 6200 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 324X229mm 120gsm Pack 125 Code 12935 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 324X229mm 120gsm Pack 125 Code 13935 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 318X267mm 120gsm Pack 125 Code 14935 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 394X318mm 120gsm Pack 125 Code 15935 3P
Blake Purely Packaging White Peel & Seal Board Back Gusset 324X229X50mm 120G Pk125 Code 92935 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Gusset 324X229X50mm 120G Pk125 Code 93935M 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 229X162mm 350G Pk200 Code Ppa5-Rs 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 241X178mm 350G Pk200 Code Ppa8-Rs 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 440X170 350G Pk100 Code Ppa24-Rs 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 449X349 350G Pk100 Code Ppa26-Rs 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 249X249 350G Pk100 Code Ppa21-Rs 3P
Blake Purely Packaging White Board Peel & Seal All Board Pocket 140X140mm 350G Pk200 Code Ppa1-Rs 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 162X114mm 120gsm Pack 250 Code 2112 3P
Blake Purely Packaging Manilla Peel & Seal Board Back 450X324mm 120gsm Pack 50 Code 4200/50 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 240X165mm 120gsm Pack 125 Code 4112 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 241X178mm 120gsm Pack 125 Code 11935 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 241X178mm 120gsm Pack 125 Code 6112 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 267X216mm 120gsm Pack 125 Code 22935 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 352X250mm 120gsm Pack 125 Code 8112 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 352X250mm 120gsm Pack 125 Code 8111 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 394X318mm 120gsm Pack 125 Code 3200 3P
Blake Purely Packaging Manilla Peel & Seal Board Back Pocket 450X324mm 120gsm Pack 100 Code 4200 3P
Blake Purely Packaging White Peel & Seal Board Back Pocket 450X324mm 120gsm Pack 100 Code 5200 3P
Total 77 products
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Board Backed Envelopes

Shop board backed envelopes for secure and reliable document delivery at The Green Office. Designed with a rigid cardboard backing, these envelopes help prevent bending, creasing and damage during transit, making them ideal for posting important documents and flat items.

Board backed envelopes are commonly used for sending certificates, contracts, photographs and artwork, ensuring contents arrive in excellent condition without the need for additional packaging.

Do not bend envelopes for document protection

Board backed envelopes, often labelled “Do Not Bend”, are specifically designed to keep contents flat and protected. The stiff backing adds strength and durability, reducing the risk of damage during handling and delivery.

This makes them an essential choice for businesses sending legal documents, marketing materials or important paperwork that must remain intact.

Ideal for documents, photos and artwork

These envelopes are widely used for mailing certificates, photographs, brochures and artwork. The rigid structure prevents folding and protects delicate items from pressure or impact during transit. :contentReference[oaicite:0]{index=0}

They are also suitable for sending magazines, booklets and other flat items that require extra protection compared to standard envelopes.

Strong, durable and easy to use

Board backed envelopes typically feature a paper front with a strong cardboard rear, offering a balance of flexibility and rigidity. Many designs include peel-and-seal closures for quick and secure sealing.

Their durable construction helps ensure contents remain secure, while also providing a professional appearance when sending documents to clients or customers.

Available in multiple sizes and formats

Our range includes board backed envelopes in a variety of sizes, including A4, A5 and smaller formats, making them suitable for different document types. Options include manilla and white finishes, as well as printed and unprinted designs.

Choosing the correct size helps ensure documents fit without folding, providing maximum protection during delivery.

Eco-friendly and recyclable options

Many board backed envelopes are made from paper and cardboard materials that can be recycled, helping reduce environmental impact. Some products are also made from recycled materials, supporting more sustainable packaging choices.

For more environmentally responsible packaging and office supplies, you can explore our paper and card range.

Supporting sustainable office practices

Using durable, reusable and recyclable packaging is an important step towards reducing waste in your organisation. Choosing the right envelope for the job helps minimise damage and avoids the need for replacement items.

For more tips on reducing waste and improving sustainability in your workplace, read our guide to building a circular economy in your office.

Why choose board backed envelopes from The Green Office?

  • Rigid backing to prevent bending and creasing
  • Ideal for documents, certificates, photos and artwork
  • Durable construction for secure mailing
  • Available in multiple sizes and formats
  • Eco-friendly and recyclable options available

Browse our full range of board backed envelopes and find reliable, eco-friendly solutions for protecting important documents during transit.

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