C4 Archives | Initiative Office Products https://www.initiativeofficeproducts.co.uk/size/c4/ Award winning office stationery Thu, 29 Jan 2026 14:56:50 +0000 en-US hourly 1 https://www.initiativeofficeproducts.co.uk/wp-content/uploads/2019/05/recycle_box_logo-100x100.png C4 Archives | Initiative Office Products https://www.initiativeofficeproducts.co.uk/size/c4/ 32 32 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.

    ]]>         EN1581 | Initiative Envelope Pocket C4 Self Seal 90g White Window Pack 250 https://www.initiativeofficeproducts.co.uk/product/en1581-initiative-envelope-pocket-c4-self-seal-90g-white-window-pack-250/ Thu, 29 Jan 2026 14:55:37 +0000 https://www.initiativeofficeproducts.co.uk/product/en1581-initiative-envelope-pocket-c4-self-seal-90g-white-window-pack-250/

    The post EN1581 | Initiative Envelope Pocket C4 Self Seal 90g White Window Pack 250 appeared first on Initiative Office Products.

    ]]>     High quality white wove pocket envelopes with clear windows. Opaqued interior to keep your post confidential. Windows are large enough to fit almost any form including legal documents.

  • Size: 324 x 229mm.
  • Window size 40 x 104mm. Window position 24mm in from left 213mm up.
  • 90gsm.
  • Self Seal.

    • The post EN1581 | Initiative Envelope Pocket C4 Self Seal 90g White Window Pack 250 appeared first on Initiative Office Products.

    ]]>         EN2314 | Initiative Envelope C4 Self Seal 100gsm White Pack Pack 250 https://www.initiativeofficeproducts.co.uk/product/en2314-initiative-envelope-c4-self-seal-100gsm-white-pack-pack-250/ Thu, 29 Jan 2026 14:55:26 +0000 https://www.initiativeofficeproducts.co.uk/product/en2314-initiative-envelope-c4-self-seal-100gsm-white-pack-pack-250/

    The post EN2314 | Initiative Envelope C4 Self Seal 100gsm White Pack 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.
  • 100gsm.
  • Self Seal.

    • The post EN2314 | Initiative Envelope C4 Self Seal 100gsm White Pack Pack 250 appeared first on Initiative Office Products.

    ]]>         EN9059 | Initiative Envelope C4 Self Seal Window 100gsm White Pack 250 https://www.initiativeofficeproducts.co.uk/product/en9059-initiative-envelope-c4-self-seal-window-100gsm-white-pack-250/ Thu, 29 Jan 2026 14:55:26 +0000 https://www.initiativeofficeproducts.co.uk/product/en9059-initiative-envelope-c4-self-seal-window-100gsm-white-pack-250/

    The post EN9059 | Initiative Envelope C4 Self Seal Window 100gsm White Pack 250 appeared first on Initiative Office Products.

    ]]>     High quality white wove pocket envelopes with clear windows. Opaqued interior to keep your post confidential. Windows are large enough to fit almost any form including legal documents.

  • Size: 324 x 229mm.
  • Window size 40 x 104mm. Window position 24mm in from left 213mm up.
  • 100gsm.
  • Self Seal.

    • The post EN9059 | Initiative Envelope C4 Self Seal Window 100gsm White Pack 250 appeared first on Initiative Office Products.

    ]]>         EN9164 | C4 White Gusset Pocket Window 324x229x25mm V Bottom Peel & Seal 140gsm Box 125 https://www.initiativeofficeproducts.co.uk/product/en9164-c4-white-gusset-pocket-window-324x229x25mm-v-bottom-peel-seal-140gsm-box-125/ Thu, 29 Jan 2026 14:23:42 +0000 https://www.initiativeofficeproducts.co.uk/product/en9164-initiative-envelope-gusset-pocket-window-peel-seal-c4-140gsm-324x229x25-white-pack-125/

    The post EN9164 | C4 White Gusset Pocket Window 324x229x25mm V Bottom Peel & Seal 140gsm Box 125 appeared first on Initiative Office Products.

    ]]>     Heavyweight white wove pocket gusseted envelopes. Ideal for mailing bulkier documents with 25mm gusset. Opaqued interior to keep your post confidential. Windows are large enough to fit almost any form including legal documents.

  • Size: 324 x 229mm.
  • Window size 40 x 105mm. Window position 24mm in from left 213mm up.
  • 140gsm.
  • Peel & Seal.

    • The post EN9164 | C4 White Gusset Pocket Window 324x229x25mm V Bottom Peel & Seal 140gsm Box 125 appeared first on Initiative Office Products.

    ]]>         EN9512 | C4 Manilla Gusset Pocket Plain 324x229x25mm Peel & Seal 130gsm Box 125 https://www.initiativeofficeproducts.co.uk/product/en9512-c4-manilla-gusset-pocket-plain-324x229x25mm-peel-seal-130gsm-box-125/ Thu, 29 Jan 2026 14:23:42 +0000 https://www.initiativeofficeproducts.co.uk/product/en9512-initiative-envelope-25mm-v-base-gusset-pocketed-plain-peel-n-seal-c4-120gsm-manilla-pack-125/

    The post EN9512 | C4 Manilla Gusset Pocket Plain 324x229x25mm Peel & Seal 130gsm Box 125 appeared first on Initiative Office Products.

    ]]>     Ideal for mailing bulkier documents. C4 size Built in 25mm v base gusset expands to fit contents. Strong seams and heavyweight 130gsm manilla protects against bursting open during mailing so contents arrive intact. Peel & Seal flaps for a stronger closesure.

  • C4: 324 X 229 x 25mm
  • 130gsm.
  • Peel & Seal.

    • The post EN9512 | C4 Manilla Gusset Pocket Plain 324x229x25mm Peel & Seal 130gsm Box 125 appeared first on Initiative Office Products.

    ]]>         EN9516 | Initiative C4 Manilla Boardback 324x229mm Peel & Seal 120gsm Please Do Not Bend’ Box 125 https://www.initiativeofficeproducts.co.uk/product/en9516-initiative-c4-manilla-boardback-324x229mm-peel-seal-120gsm-please-do-not-bend-box-125/ Thu, 29 Jan 2026 14:23:42 +0000 https://www.initiativeofficeproducts.co.uk/product/en9516-initiative-envelope-boardbacked-peel-n-seal-c4-115gsm-manilla-pack-125/

    The post EN9516 | Initiative C4 Manilla Boardback 324x229mm Peel & Seal 120gsm Please Do Not Bend’ Box 125 appeared first on Initiative Office Products.

    ]]>     Board back manilla envelopes. Peel & seal flaps for a stronger closure. Strong 120gsm manilla will not split or tear. ‘Please do not bend’ printed on the front for added security.

  • C4 size. 324 X 229mm (12.75in x 9in).
  • 120gsm.
  • Peel & Seal.

    • The post EN9516 | Initiative C4 Manilla Boardback 324x229mm Peel & Seal 120gsm Please Do Not Bend’ Box 125 appeared first on Initiative Office Products.

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