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Gusset Envelopes

Mail your bulky documents securely with our Gusset Envelopes. Designed to expand for larger items, they are perfect for sending catalogs, brochures, or multiple documents.

  • Plus Fabric C4 Prestige White 120gsm Gusset P&S Powertac Pocket Box of 100 Envelopes

    Original price £79.78 GBP - Original price £79.78 GBP
    Original price £79.78 GBP
    £89.99 GBP
    £89.99 GBP - £89.99 GBP
    Current price £89.99 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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  • Tyvek E4 Gusset Envelopes 305 x 406 mm Peel and Seal Plain 55 gsm White Pack of 100

    Original price £119.49 GBP - Original price £119.49 GBP
    Original price
    £119.49 GBP
    £119.49 GBP - £119.49 GBP
    Current price £119.49 GBP
    Out of stock

    Description Specifications However hard the journey, you can rely on Tyvek envelopes The strongest envelope for your important mail Burst,...

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  • PREMIUM Office Gusset Envelopes 35215 C5 Peel & Seal 229 x 162 x 25 mm Plain 120 gsm Ultra White Wove Pack of 125

    Original price £65.99 GBP - Original price £65.99 GBP
    Original price
    £65.99 GBP
    £65.99 GBP - £65.99 GBP
    Current price £65.99 GBP
    Out of stock

    Make a difference to your mail with these quality Premium Office envelopes by Blake Quality 120 gsm FSC Certified Paper Attractive box for safe an...

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  • PREMIUM Tear Resistant Gusset Envelopes C4 Peel & Seal 324 x 229 x 25 mm Plain 125 gsm White Pack of 100

    Original price £114.99 GBP - Original price £114.99 GBP
    Original price
    £114.99 GBP
    £114.99 GBP - £114.99 GBP
    Current price £114.99 GBP
    Out of stock

    Make a difference to your mail with these durable Premium Secure envelopes by Blake Made from high quality 125gsm, tear resistant paper Secure Pee...

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  • Premium Business Envelopes with Window C4 229 (W) x 324 (H) mm Adhesive Strip White 140 gsm Pack of 100

    Original price £107.99 GBP - Original price £107.99 GBP
    Original price
    £107.99 GBP
    £107.99 GBP - £107.99 GBP
    Current price £107.99 GBP
    Out of stock

    Trust in the security of your delivery with Premium BusinessDescriptionHot melt peel and seal flap ensures long shelf life and optimum tamper proof...

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  • Office Depot Non Standard Gusset Envelopes 305 x 406 mm Peel and Seal Plain 140 gsm Brown Pack of 125

    Original price £72.99 GBP - Original price £72.99 GBP
    Original price
    £72.99 GBP
    £72.99 GBP - £72.99 GBP
    Current price £72.99 GBP
    Out of stock

    Simplified mailing solutions from Office Depot Extra tough expandable envelopes with strong peel and seal closure SEAL TIGHTER - Peel and seal fla...

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  • Office Depot C5 Gusset Envelopes 162 x 229 mm Peel and Seal Plain 120 gsm Brown Pack of 125

    Original price £43.99 GBP - Original price £43.99 GBP
    Original price
    £43.99 GBP
    £43.99 GBP - £43.99 GBP
    Current price £43.99 GBP
    Out of stock

    A tough all-rounder from Office Depot Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Heavyweight ...

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  • Office Depot Non Standard Gusset Envelopes 254 x 356 mm Peel and Seal Plain 140 gsm Brown Pack of 125

    Original price £66.99 GBP - Original price £66.99 GBP
    Original price
    £66.99 GBP
    £66.99 GBP - £66.99 GBP
    Current price £66.99 GBP
    Out of stock

    A tough all-rounderDescriptionEnlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Heavyweight 140gsm ma...

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  • New Guardian Hvywght P&S Gusset 25mm Manilla 350x248mm PK100

    Original price £70.83 GBP - Original price £70.83 GBP
    Original price £70.83 GBP
    £74.49 GBP
    £74.49 GBP - £74.49 GBP
    Current price £74.49 GBP
    Out of stock

    Description New Guardian Manilla Gusset Envelopes. Send bulky items with confidence in these high quality manilla gusset envelopes which provi...

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  • New Guardian Hvywght P&S Window Gusset 25mm Manilla C4 PK100

    Original price £67.58 GBP - Original price £67.58 GBP
    Original price £67.58 GBP
    £71.99 GBP
    £71.99 GBP - £71.99 GBP
    Current price £71.99 GBP
    Out of stock

    Description Send bulky items with confidence in these high quality manilla gusset envelopes which provide a combination of good looks and stre...

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  • Purely Packaging Eco Peel and Seal Gusset WH B4 140gsm PK100

    Original price £82.54 GBP
    Original price £82.54 GBP - Original price £82.54 GBP
    Original price £82.54 GBP
    Current price £73.49 GBP
    £73.49 GBP - £73.49 GBP
    Current price £73.49 GBP
    Out of stock

    Description The most environmentally friendly padded envelope on the market and the only padded mailer with an expandable gusset.

  • Purely Packaging Eco Peel and Seal Gusset Wh 140gsm C4 PK100

    Original price £78.65 GBP
    Original price £78.65 GBP - Original price £78.65 GBP
    Original price £78.65 GBP
    Current price £68.49 GBP
    £68.49 GBP - £68.49 GBP
    Current price £68.49 GBP
    Out of stock

    Description The most environmentally friendly padded envelope on the market and the only padded mailer with an expandable gusset.

  • Tyvek B4 Envelopes 250 x 353 mm Peel and Seal Plain 55 gsm White Pack of 100

    Original price £135.49 GBP - Original price £135.49 GBP
    Original price
    £135.49 GBP
    £135.49 GBP - £135.49 GBP
    Current price £135.49 GBP
    Out of stock

    However hard the journey, you can rely on Tyvek envelopes Gusset envelope designed to be water and tear resistant Made of 100% high density polyet...

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  • Tyvek Gusseted Envelopes Extra Capacity Strong C4 H324xW229xD38mm White Ref R4120 [Pack 100]

    Original price £101.88 GBP - Original price £101.88 GBP
    Original price £101.88 GBP
    £112.99 GBP
    £112.99 GBP - £112.99 GBP
    Current price £112.99 GBP
    Low stock

    Extra capacity, ideal for mailing really bulky and awkward shaped mail. C4 324x229mm. Gusset Size: 38mm. Packed 100. ONDE76372 Description Mor...

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  • Office Depot C4 Gusset Envelopes 229 x 324mm Peel and Seal Plain 120 gsm Brown Pack of 125

    Original price £43.99 GBP - Original price £43.99 GBP
    Original price
    £43.99 GBP
    £43.99 GBP - £43.99 GBP
    Current price £43.99 GBP
    Out of stock

    Simplified mailing solutions from Office Depot Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Hea...

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  • Gusset Padded Envelopes K-Pack E4 400 x 280 x 50mm - Box of 100

    Original price £106.49 GBP - Original price £106.49 GBP
    Original price
    £106.49 GBP
    £106.49 GBP - £106.49 GBP
    Current price £106.49 GBP
    Out of stock

    Quality padded mailer with expansion sides and 'V' bottom Made from 100% recycled paper Made from 3 sheets of paper: cover 140gsm oyster paper...

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  • Gusset Padded Envelopes K-Pack C5 229 x 162 x 50mm - Box of 100

    Original price £60.49 GBP - Original price £60.49 GBP
    Original price
    £60.49 GBP
    £60.49 GBP - £60.49 GBP
    Current price £60.49 GBP
    Out of stock

    Quality padded mailer with expansion sides and 'V' bottom Made from 100% recycled paper Made from 3 sheets of paper: cover 140gsm oyster paper...

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  • New Guardian Armour Envelopes Peel And Seal Gusset 50mm 135gsm Kraft Manilla 380x280mm [Box 100]

    Original price £165.56 GBP - Original price £165.56 GBP
    Original price £165.56 GBP
    £183.99 GBP
    £183.99 GBP - £183.99 GBP
    Current price £183.99 GBP
    Out of stock

    Strong 130gsm manila gusset envelopes Gusset allows envelope to expand to 25mm in depth Secure peel and seal envelopes with Power-Tac adhesive...

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  • Enduro Tear Resistant 350 x 250 x 25 Pocket Gusset Peel and Seal Envelopes White - Box of 20

    Original price £24.34 GBP
    Original price £24.34 GBP - Original price £24.34 GBP
    Original price £24.34 GBP
    Current price £20.99 GBP
    £20.99 GBP - £20.99 GBP
    Current price £20.99 GBP
    Out of stock

    Tear-resistant, burst proof envelopes which are water impermeable. Enduro envelopes are fully over-printable and can be printer-addressed Descr...

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  • Office Depot Non Standard Gusset Envelopes 254 x 381 mm Peel and Seal Plain 140 gsm Brown Pack of 125

    Original price £66.99 GBP - Original price £66.99 GBP
    Original price
    £66.99 GBP
    £66.99 GBP - £66.99 GBP
    Current price £66.99 GBP
    Out of stock

    Simplified mailing solutions from Office Depot Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Hea...

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  • Office Depot Gusset Envelopes Non standard 115 gsm 254 xx 356 mm Brown Plain Peel and Seal Pack of 125

    Original price £61.99 GBP - Original price £61.99 GBP
    Original price
    £61.99 GBP
    £61.99 GBP - £61.99 GBP
    Current price £61.99 GBP
    Out of stock

    The envelope that grows on you. Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Heavyweight 115gsm...

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  • Premium Brown Gusset V Bottom 356 x 254 x 25mm Peel and Seal 140gsm Plain - Box of 125

    Original price £65.49 GBP - Original price £65.49 GBP
    Original price
    £65.49 GBP
    £65.49 GBP - £65.49 GBP
    Current price £65.49 GBP
    Out of stock

    Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Heavyweight 140gsm manilla ensures mail arrives ...

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  • Office Depot C4 Gusset Envelopes 229 x 324 mm Peel and Seal Plain 130 gsm Brown Pack of 125

    Original price £54.49 GBP - Original price £54.49 GBP
    Original price
    £54.49 GBP
    £54.49 GBP - £54.49 GBP
    Current price £54.49 GBP
    Out of stock

    Simplified mailing solutions from Office Depot Enlarges to up to 50mm (on 2") and 25mm (on 1"), perfect for bulky mailing of paper and binders Hea...

    View full details
  • Plus Fabric C4 White Pocket Peel And Seal Gusset Envelope with Powertac, 120 gsm, Pack of 100

    Original price £86.12 GBP - Original price £86.12 GBP
    Original price £86.12 GBP
    £90.49 GBP
    £90.49 GBP - £90.49 GBP
    Current price £90.49 GBP
    Out of stock

    Plus Fabric- Premium quality paper combines strength, quality, and appearance, and creates a lasting impression C4 size with a gusset Power-ta...

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  • New Guardian Envelopes Heavyweight Peel and Seal Gusset 25mm 130gsm Manilla 381x254mm [Pack of 100]

    Original price £77.19 GBP - Original price £77.19 GBP
    Original price £77.19 GBP
    £80.99 GBP
    £80.99 GBP - £80.99 GBP
    Current price £80.99 GBP
    Out of stock

    New Guardian - A strong two-tone manila paper that safeguards important contents and offers premium protection for important Mail 381x254 size w...

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  • New Guardian C4 Armour Manilla 130gsm Peel & Seal Gusset Envelope, Box 100

    Original price £104.08 GBP - Original price £104.08 GBP
    Original price £104.08 GBP
    £109.99 GBP
    £109.99 GBP - £109.99 GBP
    Current price £109.99 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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  • New Guardian Envelopes Heavyweight Peel and Seal Gusset 25mm 130gsm Manilla C4 (Pack 100)

    Original price £62.43 GBP - Original price £62.43 GBP
    Original price £62.43 GBP
    £65.49 GBP
    £65.49 GBP - £65.49 GBP
    Current price £65.49 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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  • Premium Business Envelopes Plain C4 229 (W) x 324 (H) mm Adhesive Strip White 140 gsm Pack of 100

    Original price £106.49 GBP - Original price £106.49 GBP
    Original price
    £106.49 GBP
    £106.49 GBP - £106.49 GBP
    Current price £106.49 GBP
    Out of stock

    Trust in the security of your delivery with Premium Business Make a difference to your mail with these quality Premium Office envelopes by Blake Q...

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  • Blake Purely Packaging 406 x 305 x 30 mm 140 gsm Gusset Pocket Peel & Seal Envelopes (33301) Manilla - Pack of 125

    Original price £61.99 GBP - Original price £61.99 GBP
    Original price
    £61.99 GBP
    £61.99 GBP - £61.99 GBP
    Current price £61.99 GBP
    Out of stock

    Secure Peel and Seal Closure for ease of use, added security and extra shelf life Made from high quality 140gsm paper Perfect for catalogues, ...

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  • Blake Premium Avant Garde 406 x 305 x 30 mm 140 gsm Heavyweight Extra Strong Peel & Seal Gusset Pocket Envelopes (AG0070) Cream Manilla - Pack of 100

    Original price £120.49 GBP - Original price £120.49 GBP
    Original price
    £120.49 GBP
    £120.49 GBP - £120.49 GBP
    Current price £120.49 GBP
    Out of stock

    Make a difference to your mail with these high quality Premium Avant Garde envelopes by Blake Power-seal peel & seal for extended shelf life...

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  • Blake Premium Avant Garde 381 x 254 x 25 mm 140 gsm Heavyweight Extra Strong Peel & Seal Gusset Pocket Envelopes (AG0062) Cream Manilla - Pack of 100

    Original price £103.49 GBP - Original price £103.49 GBP
    Original price
    £103.49 GBP
    £103.49 GBP - £103.49 GBP
    Current price £103.49 GBP
    Out of stock

    Make a difference to your mail with these high quality Premium Avant Garde envelopes by Blake Power-seal peel & seal for extended shelf life...

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  • Blake Premium Secure C4 324 x 229 x 25 mm 125 gsm Tear Resistant Gusset Pocket Peel & Seal Window Envelopes (TR9901) White - Pack of 100

    Original price £154.49 GBP - Original price £154.49 GBP
    Original price
    £154.49 GBP
    £154.49 GBP - £154.49 GBP
    Current price £154.49 GBP
    Out of stock

    Make a difference to your mail with these durable Premium Secure envelopes by Blake Made from high quality 125gsm, tear resistant paper Secure...

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  • Blake Purely Packaging C5 229 x 162 x 25 mm 120 gsm Gusset Pocket Peel & Seal Window Envelopes (6001) White - Pack of 125

    Original price £32.99 GBP - Original price £32.99 GBP
    Original price
    £32.99 GBP
    £32.99 GBP - £32.99 GBP
    Current price £32.99 GBP
    Out of stock

    Secure Peel and Seal Closure for ease of use, added security and extra shelf life Made from high quality 120gsm paper Perfect for catalogues, ...

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  • Blake Premium Office C4 324 x 229 x 25 mm 120 gsm Gusset Pocket Peel & Seal Envelopes (37115) Ultra White Wove - Pack of 100

    Original price £63.18 GBP
    Original price £63.18 GBP - Original price £63.18 GBP
    Original price £63.18 GBP
    Current price £56.99 GBP
    £56.99 GBP - £56.99 GBP
    Current price £56.99 GBP
    Out of stock

    Make a difference to your mail with these quality Premium Office envelopes by Blake Quality 120 gsm FSC Certified Paper Attractive box for saf...

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  • Blake Premium Avant Garde C4 324 x 229 x 25 mm 140 gsm Heavyweight Extra Strong Peel & Seal Gusset Window Pocket Envelopes (AG0054) Cream Manilla - Pack of 100

    Original price £94.49 GBP - Original price £94.49 GBP
    Original price
    £94.49 GBP
    £94.49 GBP - £94.49 GBP
    Current price £94.49 GBP
    Out of stock

    Make a difference to your mail with these high quality Premium Avant Garde envelopes by Blake Power-seal peel & seal for extended shelf life...

    View full details
  • Blake Purely Packaging C4 324 x 229 x 25 mm 130 gsm Gusset Pocket Peel & Seal Window Envelopes (1992MW) Manilla - Pack of 125

    Original price £32.49 GBP - Original price £32.49 GBP
    Original price
    £32.49 GBP
    £32.49 GBP - £32.49 GBP
    Current price £32.49 GBP
    Out of stock

    Secure Peel and Seal Closure for ease of use, added security and extra shelf life Made from high quality 130gsm paper Perfect for catalogues, ...

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