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Window Envelopes

Find a wide range of window envelopes at Cartridge People, including C4 and DL window envelopes.

Window Envelopes
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We found 17 products
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Q-Connect Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset - White (125 Pack) KF02891

Q Connect Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset White 125 Pack KF02891 181459 F
125
Pack
  • Suitable for A4 documents
  • 120gsm heavyweight paper for durability
  • 25mm expanding gusset accommodates bulky mail
  • Secure peel and seal closure
£33.96
£28.30 ex. VAT
£28.30
£33.96 inc. VAT
£33.96
£28.30 ex. VAT
£28.30
£33.96 inc. VAT

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Order now for dispatch tomorrow

5 Star Office Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset - White (125 Pack) 930183

5 Star Office Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset White 125 Pack 930183 284129 F
125
Pack
  • Professional Quality: Crafted from 120gsm paper for a polished finish.
  • Secure & Convenient: Features a peel and seal closure – no moisture needed.
  • Accommodates Bulkier Items: 25mm V-base gusset expands for catalogues, certificates & reports.
  • C4 Size & Pack of 125: Dimensions 324x229x25mm, with a pack containing 125 envelopes.
£28.07
£23.39 ex. VAT
£23.39
£28.07 inc. VAT
£28.07
£23.39 ex. VAT
£23.39
£28.07 inc. VAT

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Order now for dispatch tomorrow

Plus Fabric Self Seal C5 Windowed Envelope 120gsm - White (500 Pack) C26870

Plus Fabric Self Seal C5 Windowed Envelope 120gsm White 500 Pack C26870 103524 F
500
Pack
  • Pack of 500: Contains 500 white C5 envelopes.
  • Durable Paper: Made from 120gsm paper for document protection.
  • Self-Seal Closure: Features a convenient, no-lick self-seal.
  • C5 Size with Window: Fits A5 or folded A4 documents; includes a 100x40mm address window.
£79.23
£66.02 ex. VAT
£66.02
£79.23 inc. VAT
£79.23
£66.02 ex. VAT
£66.02
£79.23 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset - White (100 Pack) C27566

Plus Fabric Peel and Seal C4 Windowed Envelope 120gsm 25mm Gusset White 100 Pack C27566 139221 F
100
Pack
  • Suitable for A4 documents with a 25mm expanding gusset.
  • Made from durable 120gsm bright white paper.
  • Features a convenient 45 x 100mm address window.
  • Pack of 100 C4 envelopes with a peel and seal closure.
£85.29
£71.07 ex. VAT
£71.07
£85.29 inc. VAT
£85.29
£71.07 ex. VAT
£71.07
£85.29 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Self Seal C4 Windowed Basketweave Pocket Envelope 115gsm - Manilla (250 Pack) KF3534

Q Connect Self Seal C4 Windowed Basketweave Pocket Envelope 115gsm Manilla 250 Pack KF3534 137017 F
250
Pack
  • Pack of 250: Ideal for frequent mailing needs
  • C4 Size and 115gsm Paper: Suitable for A4 documents with a professional finish
  • Self-Seal Closure: Quick, secure, and eliminates the need for licking
  • Clear Window (40x105mm): Enhances address visibility for streamlined mailing
£22.05
£18.37 ex. VAT
£18.37
£22.05 inc. VAT
£22.05
£18.37 ex. VAT
£18.37
£22.05 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Peel and Seal C4 Windowed Pocket Envelope 120gsm - White (250 Pack) L23970

Plus Fabric Peel and Seal C4 Windowed Pocket Envelope 120gsm White 250 Pack L23970 144938 F
250
Pack
  • Size: C4, designed for A4 documents
  • Paper Weight: Durable 120gsm paper stock
  • Closure: Secure peel and seal flap with tear strip
  • Pack Quantity: 250 envelopes per pack
£86.72
£72.27 ex. VAT
£72.27
£86.72 inc. VAT
£86.72
£72.27 ex. VAT
£72.27
£86.72 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Basildon Bond Peel and Seal C4 Windowed Pocket Envelope 120gsm - White (250 Pack) K80121

Basildon Bond Peel and Seal C4 Windowed Pocket Envelope 120gsm White 250 Pack K80121 126455 F
250
Pack

  • Pack of 250 C4 white envelopes for professional mailing.

  • Made from 120gsm 100% recycled paper – an eco-friendly choice.

  • Features a convenient peel & seal closure and address window.

  • Opaque green interior ensures confidentiality; fits unfolded A4 documents.

£57.49
£47.91 ex. VAT
£47.91
£57.49 inc. VAT
£57.49
£47.91 ex. VAT
£47.91
£57.49 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Peel and Seal C5 Windowed Pocket Envelope 115gsm - Manilla (500 Pack) KF97370

Q Connect Peel and Seal C5 Windowed Pocket Envelope 115gsm Manilla 500 Pack KF97370 168857 F
500
Pack
  • Bulk Pack: Contains 500 manilla envelopes for extended use.
  • Peel & Seal Closure: Features a convenient, no-moisture closure.
  • Recycled Paper: Made from 85% recycled paper for an environmentally conscious choice.
  • A4/A5 Compatible: Suitable for A4 sheets folded or unfolded A5 sheets.
£22.33
£18.61 ex. VAT
£18.61
£22.33 inc. VAT
£22.33
£18.61 ex. VAT
£18.61
£22.33 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Self Seal DL Windowed Wallet Envelope 120gsm - White (500 Pack) C22570

Plus Fabric Self Seal DL Windowed Wallet Envelope 120gsm White 500 Pack C22570 127190 F
500
Pack
  • Pack of 500: Contains 500 white DL envelopes.
  • 120gsm Paper: Crafted from robust 120gsm paper for reliable mailing.
  • Self-Seal Closure: Features a convenient self-seal closure for secure contents.
  • Fits A5/A4: Comfortably fits A5 sheets folded once, or A4 sheets folded twice.
£57.48
£47.90 ex. VAT
£47.90
£57.48 inc. VAT
£57.48
£47.90 ex. VAT
£47.90
£57.48 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Peel and Seal C4 Windowed Envelope 130gsm - Manilla (250 Pack) F24203

New Guardian Peel and Seal C4 Windowed Envelope 130gsm Manilla 250 Pack F24203 123600 F
250
Pack
  • Size: C4 – fits unfolded A4 documents
  • Secure Closure: Features a reliable Power-Tac peel & seal
  • Heavyweight Paper: Made from strong 130gsm manilla paper
  • Convenient Features: Includes tear strip & 40x100mm address window
£67.16
£55.97 ex. VAT
£55.97
£67.16 inc. VAT
£67.16
£55.97 ex. VAT
£55.97
£67.16 inc. VAT

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Order now for dispatch tomorrow

Plus Fabric Peel and Seal DL Windowed Wallet Envelope 120gsm - White (500 Pack) B22170

Plus Fabric Peel and Seal DL Windowed Wallet Envelope 120gsm White 500 Pack B22170 101672 F
500
Pack
  • Ideal for correspondence with a robust 120gsm paper construction
  • Features a 39 x 93mm address window for clear recipient details
  • Includes a tear strip for effortless opening
  • Perfectly sized for A5/A4 folded sheets, with a large 500 envelope pack
£65.31
£54.42 ex. VAT
£54.42
£65.31 inc. VAT
£65.31
£54.42 ex. VAT
£54.42
£65.31 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Basildon Bond Peel and Seal C5 Windowed Pocket Envelope 120gsm - White (500 Pack) J80119

Basildon Bond Peel and Seal C5 Windowed Pocket Envelope 120gsm White 500 Pack J80119 114434 F
500
Pack

  • Pack of 500 white C5 pocket envelopes.

  • Made from 100% recycled 120gsm paper – eco-friendly!

  • Features a biodegradable address window & peel and seal closure.

  • Fits unfolded A5 sheets or folded A4 documents.

£60.26
£50.22 ex. VAT
£50.22
£60.26 inc. VAT
£60.26
£50.22 ex. VAT
£50.22
£60.26 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Self Seal C4 Windowed Pocket Envelope 120gsm - White (250 Pack) H27070

Plus Fabric Self Seal C4 Windowed Pocket Envelope 120gsm White 250 Pack H27070 127526 F
250
Pack
  • Size: C4, ideal for A4 documents
  • Material: Durable 120gsm paper construction
  • Closure: Convenient self-seal design
  • Pack: Includes 250 white envelopes
£147.43
£122.86 ex. VAT
£122.86
£147.43 inc. VAT
£147.43
£122.86 ex. VAT
£122.86
£147.43 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Basildon Bond Peel and Seal DL Windowed Wallet Envelope 120gsm - White (500 Pack) A80117

Basildon Bond Peel and Seal DL Windowed Wallet Envelope 120gsm White 500 Pack A80117 113356 F
500
Pack
  • Eco-Friendly: Made from 100% recycled 120gsm paper.
  • Convenient Closure: Features a peel & seal closure for secure mailing.
  • DL Size: Suitable for A5 or A4 sheets folded appropriately.
  • Pack of 500: Contains 500 white envelopes per pack.
£52.29
£43.57 ex. VAT
£43.57
£52.29 inc. VAT
£52.29
£43.57 ex. VAT
£43.57
£52.29 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Peel and Seal C5 Windowed Envelope 120gsm - White (500 Pack) E24970

Plus Fabric Peel and Seal C5 Windowed Envelope 120gsm White 500 Pack E24970 113869 F
500
Pack
  • Pack of 500 white C5 envelopes for professional mailing.
  • Made from durable 120gsm paper with a peel and seal closure.
  • Fits A5 documents unfolded, or A4 folded once.
  • Includes clear address window & easy-open tear strip.
£87.30
£72.75 ex. VAT
£72.75
£87.30 inc. VAT
£87.30
£72.75 ex. VAT
£72.75
£87.30 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Self Seal C4 Windowed Envelope 130gsm - Manilla (250 Pack) M27503

New Guardian Self Seal C4 Windowed Envelope 130gsm Manilla 250 Pack M27503 125027 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Paper Weight: Durable 130gsm paper
  • Envelope Size: C4, fits unfolded A4 documents
  • Closure Type: Self-seal with 40x100mm address window
£57.89
£48.24 ex. VAT
£48.24
£57.89 inc. VAT
£57.89
£48.24 ex. VAT
£48.24
£57.89 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Self Seal C6 Windowed Wallet Envelope 120gsm - White (500 Pack) F22670

Plus Fabric Self Seal C6 Windowed Wallet Envelope 120gsm White 500 Pack F22670 117423 F
500
Pack
  • Secure Mailing: Self-seal closure and opaque blue interior for confidential documents.
  • Durable Quality: Crafted from 120gsm paper for reliable handling.
  • Convenient Features: Includes a 39 x 93mm address window for easy addressing.
  • Bulk Pack: Contains 500 C6 sized envelopes for ample supply.
£61.79
£51.49 ex. VAT
£51.49
£61.79 inc. VAT
£61.79
£51.49 ex. VAT
£51.49
£61.79 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Window Envelopes

Find the window envelopes for your business or personal needs with our extensive range. Including various sizes, from popular DL and C5 to C4 and C6, you’ll also find sealing options like gummed, self seal and peel & seal.

Choose from a range of paper weights, including 70gsm, 80gsm, 90gsm and 120gsm options and benefit from convenient pack sizes, from economical smaller packs up to larger packs.

Ideal for invoices, letters and important documents, our window envelopes offer a professional finish. We stock both white and manilla envelopes with windows. Browse our selection to find the right size, weight and sealing method for efficient and secure mailing.

Discover our full range of envelopes, for the secure sending of correspondence at home or work.