Plain Envelopes Archives | Initiative Office Products https://www.initiativeofficeproducts.co.uk/type-2/plain-envelopes/ Award winning office stationery Thu, 29 Jan 2026 14:56:59 +0000 en-US hourly 1 https://www.initiativeofficeproducts.co.uk/wp-content/uploads/2019/05/recycle_box_logo-100x100.png Plain Envelopes Archives | Initiative Office Products https://www.initiativeofficeproducts.co.uk/type-2/plain-envelopes/ 32 32 EN1010 | Initiative Envelope Self Seal 381x254mm 115gsm Heavy Duty Manilla Pack 250 https://www.initiativeofficeproducts.co.uk/product/en1010-initiative-envelope-self-seal-381x254mm-115gsm-heavy-duty-manilla-pack-250/ Thu, 29 Jan 2026 14:56:53 +0000 https://www.initiativeofficeproducts.co.uk/product/en1010-initiative-envelope-self-seal-381x254mm-115gsm-heavy-duty-manilla-pack-250/

The post EN1010 | Initiative Envelope Self Seal 381x254mm 115gsm Heavy Duty Manilla Pack 250 appeared first on Initiative Office Products.

]]> High quality pocket envelopes made from heavyweight 115gsm 80% recycled manilla to help withstand rough handling. Self seal flaps won’t break open even under the toughest conditions. Ideal for mailing reports brochures etc.

  • 381 x 254mm
  • 115gsm.
  • Self Seal

    • The post EN1010 | Initiative Envelope Self Seal 381x254mm 115gsm Heavy Duty Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>         EN1578 | Initiative Envelope Pocket C5 Self Seal 90g White Pack 500 https://www.initiativeofficeproducts.co.uk/product/en1578-initiative-envelope-pocket-c5-self-seal-90g-white-pack-500/ Thu, 29 Jan 2026 14:56:53 +0000 https://www.initiativeofficeproducts.co.uk/product/en1578-initiative-envelope-pocket-c5-self-seal-90g-white-pack-500/

    The post EN1578 | Initiative Envelope Pocket C5 Self Seal 90g White Pack 500 appeared first on Initiative Office Products.

    ]]>     High quality white wove pocket envelopes are extra strong to ensure safe arrival of all your correspondence. Opaqued interior to keep all your post confidential.

  • Size: 229 x 162mm.
  • 90gsm.
  • Self Seal.

    • The post EN1578 | Initiative Envelope Pocket C5 Self Seal 90g White Pack 500 appeared first on Initiative Office Products.

    ]]>         EN1301 | Initiative Envelope DL Self Seal 110gsm White Pack 1000 https://www.initiativeofficeproducts.co.uk/product/en1301-initiative-envelope-dl-self-seal-110gsm-white-pack-1000/ Thu, 29 Jan 2026 14:56:41 +0000 https://www.initiativeofficeproducts.co.uk/product/en1301-initiative-envelope-dl-self-seal-110gsm-white-pack-1000/

    The post EN1301 | Initiative Envelope DL Self Seal 110gsm White Pack 1000 appeared first on Initiative Office Products.

    ]]>     High quality 110gsm white wove wallet envelopes which are extra strong to ensure safe arrival of all your correspondence. Opaqued interior to keep all your post confidential. With tamper evident security slits.

  • Size: 110 x 220mm.
  • 110gsm.
  • Self Seal.

    • The post EN1301 | Initiative Envelope DL Self Seal 110gsm White Pack 1000 appeared first on Initiative Office Products.

    ]]>         EN2421 | Initiative Envelope C5 Self Seal Heavy Duty 115gsm Manilla Pack 500 https://www.initiativeofficeproducts.co.uk/product/en2421-initiative-envelope-c5-self-seal-heavy-duty-115gsm-manilla-pack-500/ Thu, 29 Jan 2026 14:56:41 +0000 https://www.initiativeofficeproducts.co.uk/product/en2421-initiative-envelope-c5-self-seal-heavy-duty-115gsm-manilla-pack-500/

    The post EN2421 | Initiative Envelope C5 Self Seal Heavy Duty 115gsm Manilla Pack 500 appeared first on Initiative Office Products.

    ]]>     High quality pocket envelopes made from heavyweight 115gsm 80% recycled manilla to help withstand rough handling. Strong Self Seal flaps won’t break open even under the toughest conditions. Ideal for mailing reports and brochures etc.

  • Size: 229 x 162mm.
  • 115 gsm.
  • Self Seal.

    • The post EN2421 | Initiative Envelope C5 Self Seal Heavy Duty 115gsm Manilla Pack 500 appeared first on Initiative Office Products.

    ]]>         EN2426 | Initiative Envelope C4 Self Seal Heavy Weight 115gsm Manilla Pack 250 https://www.initiativeofficeproducts.co.uk/product/en2426-initiative-envelope-c4-self-seal-heavy-weight-115gsm-manilla-pack-250/ Thu, 29 Jan 2026 14:56:41 +0000 https://www.initiativeofficeproducts.co.uk/product/en2426-initiative-envelope-c4-self-seal-heavy-weight-115gsm-manilla-pack-250/

    The post EN2426 | Initiative Envelope C4 Self Seal Heavy Weight 115gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>     High quality pocket envelopes made from heavyweight 115gsm 80% recycled manilla to help withstand rough handling. Strong Self Seal flaps won’t break open even under the toughest conditions. Ideal for mailing reports and brochures etc.

  • Size: 324 x 229mm.
  • 115gsm.
  • Self Seal.

    • The post EN2426 | Initiative Envelope C4 Self Seal Heavy Weight 115gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>         EN2437 | Initiative Envelope C4 Self Seal 80gsm Manilla Pack 250 https://www.initiativeofficeproducts.co.uk/product/en2437-initiative-envelope-c4-self-seal-80gsm-manilla-pack-250/ Thu, 29 Jan 2026 14:56:26 +0000 https://www.initiativeofficeproducts.co.uk/product/en2437-initiative-envelope-c4-self-seal-80gsm-manilla-pack-250/

    The post EN2437 | Initiative Envelope C4 Self Seal 80gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>     The lowest cost pocket manilla envelopes made with 80% recycled paper. Versatile envelopes ideal for receipts/invoices/delivery notes etc.

  • Size: 324 x 299mm.
  • 80gsm.
  • Self Seal.

    • The post EN2437 | Initiative Envelope C4 Self Seal 80gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>         EN1580 | Initiative Envelope Pocket C4 Self Seal 90g White Pack 250 https://www.initiativeofficeproducts.co.uk/product/en1580-initiative-envelope-pocket-c4-self-seal-90g-white-pack-250/ Thu, 29 Jan 2026 14:55:54 +0000 https://www.initiativeofficeproducts.co.uk/product/en1580-initiative-envelope-pocket-c4-self-seal-90g-white-pack-250/

    The post EN1580 | Initiative Envelope Pocket C4 Self Seal 90g White Pack 250 appeared first on Initiative Office Products.

    ]]>     High quality white wove pocket envelopes are extra strong to ensure safe arrival of all your correspondence. Opaqued interior to keep all your post confidential.

  • Size: 324 x 229mm.
  • 90gsm.
  • Self Seal.

    • The post EN1580 | Initiative Envelope Pocket C4 Self Seal 90g White Pack 250 appeared first on Initiative Office Products.

    ]]>         EN2623 | Initiative Envelope C5 Self Seal Plain Pocket 100gsm White Pack 500 https://www.initiativeofficeproducts.co.uk/product/en2623-initiative-envelope-c5-self-seal-plain-pocket-100gsm-white-pack-500/ Thu, 29 Jan 2026 14:55:45 +0000 https://www.initiativeofficeproducts.co.uk/product/en2623-initiative-envelope-c5-self-seal-plain-pocket-100gsm-white-pack-500/

    The post EN2623 | Initiative Envelope C5 Self Seal Plain Pocket 100gsm White Pack 500 appeared first on Initiative Office Products.

    ]]>     High quality white wove pocket envelopes are extra strong to ensure safe arrival of all your correspondence. Opaqued interior to keep all your post confidential.

  • Size: 229 x 162mm.
  • 100gsm.
  • Self Seal.

    • The post EN2623 | Initiative Envelope C5 Self Seal Plain Pocket 100gsm White Pack 500 appeared first on Initiative Office Products.

    ]]>         EN2430 | Initiative Envelope Self Seal 406x305mm 115gsm Manilla Pack 250 https://www.initiativeofficeproducts.co.uk/product/en2430-initiative-envelope-self-seal-406x305mm-115gsm-manilla-pack-250/ Thu, 29 Jan 2026 14:55:45 +0000 https://www.initiativeofficeproducts.co.uk/product/en2430-initiative-envelope-self-seal-406x305mm-115gsm-manilla-pack-250/

    The post EN2430 | Initiative Envelope Self Seal 406x305mm 115gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>     High quality pocket envelopes made from heavyweight 115gsm 80% recycled manilla manilla to help withstand rough handling. Strong Self Seal flaps won’t break open even under the toughest conditions. Ideal for mailing reports or brochures etc.

  • 406 x 305mm
  • 115gsm.
  • Self Seal.

    • The post EN2430 | Initiative Envelope Self Seal 406x305mm 115gsm Manilla Pack 250 appeared first on Initiative Office Products.

    ]]>         EN2439 | Initiative Envelope C5 Self Seal 80gsm Manilla Pack 500 https://www.initiativeofficeproducts.co.uk/product/en2439-initiative-envelope-c5-self-seal-80gsm-manilla-pack-500/ Thu, 29 Jan 2026 14:55:37 +0000 https://www.initiativeofficeproducts.co.uk/product/en2439-initiative-envelope-c5-self-seal-80gsm-manilla-pack-500/

    The post EN2439 | Initiative Envelope C5 Self Seal 80gsm Manilla Pack 500 appeared first on Initiative Office Products.

    ]]>     The lowest cost pocket manilla envelopes made from 80% recycled manilla. Versatile envelopes ideal for receipts/invoices/delivery notes etc.

  • Size: 229 x 162mm.
  • 80gsm.
  • Self Seal.

    • The post EN2439 | Initiative Envelope C5 Self Seal 80gsm Manilla Pack 500 appeared first on Initiative Office Products.

    ]]>