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Board Back Envelopes

Ensure your documents arrive safely with our Board Back Envelopes. Strong and durable, they're ideal for mailing important papers and items.

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  • Best Value Blake Purely Packaging 241 x 178 mm Board Back Pocket Peel & Seal Envelopes (11935) Manilla - Pack of 125
    Best Value Blake Purely Packaging 241 x 178 mm Board Back Pocket Peel & Seal Envelopes (11935) Manilla - Pack of 125
    Sold out

    Blake Purely Packaging 241 x 178 mm Board Back Pocket Peel & Seal Envelopes (11935) Manilla - Pack of 125

    £22.49 GBP - £22.49 GBP
    £22.49 GBP
    £22.49 GBP - £22.49 GBP
    £22.49 GBP
    Out of stock

    Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photogra...

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  • Blake Purely Envelope DL White Window 220 (W) x 110 (H) mm Peel and Seal 100 gsm Pack of 250
    Blake Purely Envelope DL White Window 220 (W) x 110 (H) mm Peel and Seal 100 gsm Pack of 250
    Sold out

    Blake Purely Envelope DL White Window 220 (W) x 110 (H) mm Peel and Seal 100 gsm Pack of 250

    £11.99 GBP - £11.99 GBP
    £11.99 GBP
    £11.99 GBP - £11.99 GBP
    £11.99 GBP
    Out of stock

    Secure peel and seal closure for Ease of use, added security and extra shelf life High quality 100 gsm paper Perfect for business Correspondence, ...

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  • Office Depot Board Back Envelopes Non Standard Peel and Seal 267 x 216 mm Plain 115 gsm Brown Pack of 125
    Office Depot Board Back Envelopes Non Standard Peel and Seal 267 x 216 mm Plain 115 gsm Brown Pack of 125
    Sold out

    Office Depot Board Back Envelopes Non Standard Peel and Seal 267 x 216 mm Plain 115 gsm Brown Pack of 125

    £49.99 GBP - £49.99 GBP
    £49.99 GBP
    £49.99 GBP - £49.99 GBP
    £49.99 GBP
    Out of stock

    Secure your letters with Office Depot quality envelopes Higher-grade paper gives a superior finish, also available in white for a professional loo...

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  • PREMIUM Board Back Envelopes C5 229 x 162 mm 210 gsm Ultra White Pack of 250
    PREMIUM Board Back Envelopes C5 229 x 162 mm 210 gsm Ultra White Pack of 250
    Sold out

    PREMIUM Board Back Envelopes C5 229 x 162 mm 210 gsm Ultra White Pack of 250

    £98.49 GBP - £98.49 GBP
    £98.49 GBP
    £98.49 GBP - £98.49 GBP
    £98.49 GBP
    Out of stock

    Premium has the perfect solution for you and your packing needs Secure Peel and Seal Closure for ease of use, added security and extra shelf life ...

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  • Purely Board Back Envelopes C4 Peel & Seal 324 x 229 x 25 mm Plain 120 gsm White Pack of 125
    Purely Board Back Envelopes C4 Peel & Seal 324 x 229 x 25 mm Plain 120 gsm White Pack of 125
    Sold out

    Purely Board Back Envelopes C4 Peel & Seal 324 x 229 x 25 mm Plain 120 gsm White Pack of 125

    £79.49 GBP - £79.49 GBP
    £79.49 GBP
    £79.49 GBP - £79.49 GBP
    £79.49 GBP
    Out of stock

    Purely has the perfect solution for you and your packing needs Make a difference to your mail with these Purely Packaging Board Back envelopes by ...

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  • PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 162 x 229 mm Plain 210 gsm Ultra White Pack of 250
    PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 162 x 229 mm Plain 210 gsm Ultra White Pack of 250
    Sold out

    PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 162 x 229 mm Plain 210 gsm Ultra White Pack of 250

    £91.49 GBP - £91.49 GBP
    £91.49 GBP
    £91.49 GBP - £91.49 GBP
    £91.49 GBP
    Out of stock

    Premium has the perfect solution for you and your packing needs Secure Peel and Seal Closure for ease of use, added security and extra shelf life ...

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  • PREMIUM Optima Card Board Back Envelopes Peel & Seal 220 x 220 mm Plain 210 gsm Ultra White Pack of 250
    PREMIUM Optima Card Board Back Envelopes Peel & Seal 220 x 220 mm Plain 210 gsm Ultra White Pack of 250
    Sold out

    PREMIUM Optima Card Board Back Envelopes Peel & Seal 220 x 220 mm Plain 210 gsm Ultra White Pack of 250

    £100.99 GBP - £100.99 GBP
    £100.99 GBP
    £100.99 GBP - £100.99 GBP
    £100.99 GBP
    Out of stock

    Premium has the perfect solution for you and your packing needs Peel and Seal High quality 210gsm paper Five year shelf life High quality 210gsm c...

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  • PREMIUM Optima Card Board Back Envelopes Peel & Seal 305 x 127 mm Plain 210 gsm Ultra White Pack of 250
    PREMIUM Optima Card Board Back Envelopes Peel & Seal 305 x 127 mm Plain 210 gsm Ultra White Pack of 250
    Sold out

    PREMIUM Optima Card Board Back Envelopes Peel & Seal 305 x 127 mm Plain 210 gsm Ultra White Pack of 250

    £96.99 GBP - £96.99 GBP
    £96.99 GBP
    £96.99 GBP - £96.99 GBP
    £96.99 GBP
    Out of stock

    Premium has the perfect solution for you and your packing needs Peel and Seal High quality 210gsm paper Five year shelf life High quality 210gsm c...

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  • RAJA Board Back Envelopes Cardboard 458 (W) x 328 (H) mm Brown Pack of 75
    Sold out

    RAJA Board Back Envelopes Cardboard 458 (W) x 328 (H) mm Brown Pack of 75

    £110.99 GBP - £110.99 GBP
    £110.99 GBP
    £110.99 GBP - £110.99 GBP
    £110.99 GBP
    Out of stock

    Protects your products from creasesDescriptionSave money with every posting. Choice of 7 sizes, 6 are large letter. Rigid 400 gsm virgin Kraft card...

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  • RAJA Board Back Envelopes Cardboard 180 (W) x 164 (H) mm Brown Pack of 100
    Sold out

    RAJA Board Back Envelopes Cardboard 180 (W) x 164 (H) mm Brown Pack of 100

    £38.49 GBP - £38.49 GBP
    £38.49 GBP
    £38.49 GBP - £38.49 GBP
    £38.49 GBP
    Out of stock

    Item Group 12432423DescriptionSave money with every posting. Choice of 7 sizes, 6 are large letter. Rigid 400 gsm virgin Kraft cardboard. Bend resi...

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  • PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 229 x 162 mm Plain 210 gsm Ultra White Pack of 250
    PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 229 x 162 mm Plain 210 gsm Ultra White Pack of 250
    Sold out

    PREMIUM Optima Card Board Back Envelopes C5 Peel & Seal 229 x 162 mm Plain 210 gsm Ultra White Pack of 250

    £91.49 GBP - £91.49 GBP
    £91.49 GBP
    £91.49 GBP - £91.49 GBP
    £91.49 GBP
    Out of stock

    Premium has the perfect solution for you and your packing needs Peel and Seal High quality 210gsm paper Five year shelf life High quality 210gsm c...

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  • RAJA Board Back Envelopes Cardboard 235 (W) x 180 (H) mm Brown Pack of 100
    Sold out

    RAJA Board Back Envelopes Cardboard 235 (W) x 180 (H) mm Brown Pack of 100

    £47.49 GBP - £47.49 GBP
    £47.49 GBP
    £47.49 GBP - £47.49 GBP
    £47.49 GBP
    Out of stock

    Protects your products from creasesDescriptionSave money with every posting. Choice of 7 sizes, 6 are large letter. Rigid 400 gsm virgin Kraft card...

    View full details
  • RAJA Board Back Envelopes Cardboard 334 (W) x 234 (H) mm Brown Pack of 100
    Sold out

    RAJA Board Back Envelopes Cardboard 334 (W) x 234 (H) mm Brown Pack of 100

    £73.99 GBP - £73.99 GBP
    £73.99 GBP
    £73.99 GBP - £73.99 GBP
    £73.99 GBP
    Out of stock

    Protects your products from creasesDescriptionSave money with every posting. Choice of 7 sizes, 6 are large letter. Rigid 400 gsm virgin Kraft card...

    View full details
  • Purely Packaging Vita Board Back Envelopes C4 Peel & Seal 324 x 229 mm Plain 120 gsm White Pack of 125
    Purely Packaging Vita Board Back Envelopes C4 Peel & Seal 324 x 229 mm Plain 120 gsm White Pack of 125
    Sold out

    Purely Packaging Vita Board Back Envelopes C4 Peel & Seal 324 x 229 mm Plain 120 gsm White Pack of 125

    £41.49 GBP - £41.49 GBP
    £41.49 GBP
    £41.49 GBP - £41.49 GBP
    £41.49 GBP
    Out of stock

    Purely has the perfect solution for your packing needs Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake He...

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  • Best Value Value Boardback Pocket P/S C4 324x229mm Manilla PK125
    Sold out

    Value Boardback Pocket P/S C4 324x229mm Manilla PK125

    £29.02 GBP
    £29.02 GBP - £29.02 GBP
    £29.02 GBP
    £20.49 GBP
    £20.49 GBP - £20.49 GBP
    £20.49 GBP
    Out of stock

    Description Heavy duty board back envelopes in white and manilla, made using 1000 micron backing board and a heavyweight face paper to ensure ...

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  • Best Value 50 x Board Backed Envelopes 457 x 324mm Manilla, Peel & Seal
    Best Value 50 x Board Backed Envelopes 457 x 324mm Manilla, Peel & Seal
    Sold out

    50 x Board Backed Envelopes 457 x 324mm Manilla, Peel & Seal

    £54.49 GBP - £54.49 GBP
    £54.49 GBP
    £54.49 GBP - £54.49 GBP
    £54.49 GBP
    Out of stock

    115gsm manilla and 112gsm white resists splitting and tearing Higher-grade paper gives a superior finish, also available in white for a professi...

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  • Office Depot Board Back Envelopes C6 Peel and Seal 190 x 140mm Plain 115 gsm Brown Pack of 125
    Office Depot Board Back Envelopes C6 Peel and Seal 190 x 140mm Plain 115 gsm Brown Pack of 125
    Sold out

    Office Depot Board Back Envelopes C6 Peel and Seal 190 x 140mm Plain 115 gsm Brown Pack of 125

    £40.99 GBP - £40.99 GBP
    £40.99 GBP
    £40.99 GBP - £40.99 GBP
    £40.99 GBP
    Out of stock

    Secure your letters with Office Depot quality envelopes Higher-grade paper gives a superior finish, also available in white for a professional loo...

    View full details
  • Best Value Premium Plain White Board Backed Pocket Envelopes C4 112gsm - Box of 125
    Best Value Premium Plain White Board Backed Pocket Envelopes C4 112gsm - Box of 125
    Sold out

    Premium Plain White Board Backed Pocket Envelopes C4 112gsm - Box of 125

    £56.49 GBP - £56.49 GBP
    £56.49 GBP
    £56.49 GBP - £56.49 GBP
    £56.49 GBP
    Out of stock

    Latex Peel & Seal strip keeps the adhesive safe and clean for a stronger closure Product code 2113266 supersedes 978095 Sturdy 1000-micron...

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  • Office Depot Board Back Envelopes Non Standard Peel and Seal 368 x 444mm Plain 115 gsm Brown Pack of 50
    Office Depot Board Back Envelopes Non Standard Peel and Seal 368 x 444mm Plain 115 gsm Brown Pack of 50
    Sold out

    Office Depot Board Back Envelopes Non Standard Peel and Seal 368 x 444mm Plain 115 gsm Brown Pack of 50

    £46.99 GBP - £46.99 GBP
    £46.99 GBP
    £46.99 GBP - £46.99 GBP
    £46.99 GBP
    Out of stock

    Secure your letters with Office Depot quality envelopes Higher-grade paper gives a superior finish, also available in white for a professional loo...

    View full details
  • Best Value Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 241 x 178mm 115gsm - Box of 125
    Best Value Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 241 x 178mm 115gsm - Box of 125

    Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 241 x 178mm 115gsm - Box of 125

    £46.99 GBP - £46.99 GBP
    £46.99 GBP
    £46.99 GBP - £46.99 GBP
    £46.99 GBP
    Low stock

    Sturdy 1000-micron board back protects papers, photographs, films,OHPs and more from folding or creasing Higher-grade paper gives a superior fin...

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  • Best Value Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 318 x 267mm 115gsm - Box of 125
    Best Value Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 318 x 267mm 115gsm - Box of 125
    Sold out

    Premium Plain Brown Peel and Seal Board Backed Pocket Envelopes 318 x 267mm 115gsm - Box of 125

    £62.49 GBP - £62.49 GBP
    £62.49 GBP
    £62.49 GBP - £62.49 GBP
    £62.49 GBP
    Out of stock

    Latex Peel & Seal strip keeps the adhesive safe and clean for a stronger closure 115gsm manilla and 112gsm white resists splitting and teari...

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  • Best Value Plus Fabric C4 White Pocket Peel And Seal Board Back Envelope with Powertac, 120 gsm, Pack of 125
    Best Value Plus Fabric C4 White Pocket Peel And Seal Board Back Envelope with Powertac, 120 gsm, Pack of 125
    Sold out

    Plus Fabric C4 White Pocket Peel And Seal Board Back Envelope with Powertac, 120 gsm, Pack of 125

    £73.49 GBP - £73.49 GBP
    £73.49 GBP
    £73.49 GBP - £73.49 GBP
    £73.49 GBP
    Out of stock

    Plus Fabric- Premium quality paper combines strength, quality, and appearance, and creates a lasting impression C4 size Power-tac adhesive off...

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  • Best Value New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]
    Best Value New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]
    Sold out

    New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]

    £72.75 GBP
    £72.75 GBP - £72.75 GBP
    £72.75 GBP
    £67.49 GBP
    £67.49 GBP - £67.49 GBP
    £67.49 GBP
    Out of stock

    New Guardian - A strong two-tone manilla paper that safeguards important contents and offers premium protection for important Mail C4 size Sub...

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  • Best Value New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]
    Best Value New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]
    Sold out

    New Guardian H26326 Envelopes Heavyweight Board-backed Peel and Seal Manilla C4 [Pack of 125]

    £86.10 GBP
    £86.10 GBP - £86.10 GBP
    £86.10 GBP
    £56.49 GBP
    £56.49 GBP - £56.49 GBP
    £56.49 GBP
    Out of stock

    New Guardian - A strong two-tone manilla paper that safeguards important contents and offers premium protection for important Mail C4 size Sub...

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  • Blake C4 Board Back Pocket Envelope Plain Peel & Seal 324 x 229mm 120 gsm White Pack of 125
    Blake C4 Board Back Pocket Envelope Plain Peel & Seal 324 x 229mm 120 gsm White Pack of 125
    Sold out

    Blake C4 Board Back Pocket Envelope Plain Peel & Seal 324 x 229mm 120 gsm White Pack of 125

    £53.49 GBP - £53.49 GBP
    £53.49 GBP
    £53.49 GBP - £53.49 GBP
    £53.49 GBP
    Out of stock

    Post your message with extra weight, extra strength, extra safety Make a difference to your mail with these Purely Packaging Board Back envelopes ...

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  • Best Value Blake Purely Packaging C3+ 444 x 368 mm Board Back Pocket Peel & Seal Envelopes (6200) Manilla - Pack of 50
    Best Value Blake Purely Packaging C3+ 444 x 368 mm Board Back Pocket Peel & Seal Envelopes (6200) Manilla - Pack of 50
    Sold out

    Blake Purely Packaging C3+ 444 x 368 mm Board Back Pocket Peel & Seal Envelopes (6200) Manilla - Pack of 50

    £67.83 GBP
    £67.83 GBP - £67.83 GBP
    £67.83 GBP
    £38.99 GBP
    £38.99 GBP - £38.99 GBP
    £38.99 GBP
    Out of stock

    Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photogra...

    View full details
  • Best Value Blake Purely Packaging 394 x 318 mm Board Back Pocket Peel & Seal Envelopes (15935) Manilla - Pack of 125
    Best Value Blake Purely Packaging 394 x 318 mm Board Back Pocket Peel & Seal Envelopes (15935) Manilla - Pack of 125
    Sold out

    Blake Purely Packaging 394 x 318 mm Board Back Pocket Peel & Seal Envelopes (15935) Manilla - Pack of 125

    £43.99 GBP - £43.99 GBP
    £43.99 GBP
    £43.99 GBP - £43.99 GBP
    £43.99 GBP
    Out of stock

    Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photogra...

    View full details
  • Best Value Blake Purely Packaging 318 x 267 mm Board Back Pocket Peel and Seal Envelopes (14935) Manilla - Pack of 125
    Best Value Blake Purely Packaging 318 x 267 mm Board Back Pocket Peel and Seal Envelopes (14935) Manilla - Pack of 125
    Sold out

    Blake Purely Packaging 318 x 267 mm Board Back Pocket Peel and Seal Envelopes (14935) Manilla - Pack of 125

    £32.99 GBP - £32.99 GBP
    £32.99 GBP
    £32.99 GBP - £32.99 GBP
    £32.99 GBP
    Out of stock

    Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photogra...

    View full details
  • Best Value Blake Purely Packaging 267 x 216 mm Board Back Pocket Peel and Seal Envelopes (22935) Manilla - Pack of 125
    Best Value Blake Purely Packaging 267 x 216 mm Board Back Pocket Peel and Seal Envelopes (22935) Manilla - Pack of 125
    Sold out

    Blake Purely Packaging 267 x 216 mm Board Back Pocket Peel and Seal Envelopes (22935) Manilla - Pack of 125

    £25.99 GBP - £25.99 GBP
    £25.99 GBP
    £25.99 GBP - £25.99 GBP
    £25.99 GBP
    Out of stock

    Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photogra...

    View full details

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