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Plain Envelopes

Plain envelopes can be bought from us in a variety of colours such as white and manilla, as well as multiple sizes like C4, C5 and DL.

Plain Envelopes
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We found 149 products
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5 Star Office Envelopes Recycled Wallet Self Seal Lightweight 80gsm C6 White (1000 Pack) H90019

5 Star Office Envelopes Recycled Wallet Self Seal Lightweight 80gsm C6 White 1000 Pack H90019 121386 F
1000
Pack
  • Size C6 (114x162mm) - ideal for standard correspondence.
  • Pack of 1000 - provides a large supply for office use.
  • Self-Seal & Wallet Opening - for easy and secure document handling.
  • 100% Recycled Materials - a sustainable stationery choice.
£27.61
£23.01 ex. VAT
£23.01
£27.61 inc. VAT
£27.61
£23.01 ex. VAT
£23.01
£27.61 inc. VAT

Back ordered item -
Due back in stock on the 9th June

Q-Connect Envelopes Pocket Self Seal 80gsm C4 Manilla (250 Pack) KF3470

Q Connect Envelopes Pocket Self Seal 80gsm C4 Manilla 250 Pack KF3470 139796 F
250
Pack
  • Contains 250 manilla envelopes
  • Ideal for A4 documents
  • Features an easy-seal, secure flap
  • Made with 85% recycled content
£17.41
£14.51 ex. VAT
£14.51
£17.41 inc. VAT
£17.41
£14.51 ex. VAT
£14.51
£17.41 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Self Seal 90gsm C4 Manilla (250 Pack) KF3419

Q Connect Envelopes Pocket Self Seal 90gsm C4 Manilla 250 Pack KF3419 126348 F
250
Pack
  • Size: C4 - Ideal for A4 documents.
  • Quantity: 250 envelopes per pack.
  • Material: Made from 85% recycled manilla.
  • Closure: Features a convenient self-seal flap.
£18.43
£15.36 ex. VAT
£15.36
£18.43 inc. VAT
£18.43
£15.36 ex. VAT
£15.36
£18.43 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Peel and Seal 100gsm C5 White (500 Pack) KF03289

Q Connect Envelopes Pocket Peel and Seal 100gsm C5 White 500 Pack KF03289 280224 F
500
Pack
  • Bulk Pack: Contains 500 white envelopes for ample supply.
  • Secure Closure: Features a convenient peel and seal for a tidy, secure seal.
  • Paper Weight: Crafted from quality 100gsm paper for a professional finish.
  • Sheet Compatibility: Suitable for A4 (folded) or A5 (unfolded) sheets.
£26.27
£21.89 ex. VAT
£21.89
£26.27 inc. VAT
£26.27
£21.89 ex. VAT
£21.89
£26.27 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelopes Pocket Self Seal 115gsm C4 Manilla (250 Pack) J90013

5 Star Office Envelopes Pocket Self Seal 115gsm C4 Manilla 250 Pack J90013 130612 F
250
Pack
  • Pack Size: 250 C4 (324x229mm) envelopes
  • Convenient Closure: Features a reliable self-seal for easy use.
  • Paper Weight: Made from durable 115gsm paper.
  • Eco-Friendly: Crafted with 100% recycled content.
£17.59
£14.66 ex. VAT
£14.66
£17.59 inc. VAT
£17.59
£14.66 ex. VAT
£14.66
£17.59 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelope Wallet Gummed 70gsm 89mm x 152mm Manilla (1000 Pack) KF3411

Q Connect Envelope Wallet Gummed 70gsm 89mm x 152mm Manilla 1000 Pack KF3411 127834 F
1000
Pack
  • Size: 89mm x 152mm
  • Pack of 1000 manilla envelopes
  • Made with 85% Recycled Manilla
  • Secure gummed flap closure
£24.46
£20.38 ex. VAT
£20.38
£24.46 inc. VAT
£24.46
£20.38 ex. VAT
£20.38
£24.46 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Recycled Self Seal 100gsm DL White (500 Pack) KF3504

Q Connect Envelopes Recycled Self Seal 100gsm DL White 500 Pack KF3504 107322 F
500
Pack
  • Pack of 500: Contains 500 white, self-seal wallet envelopes
  • Eco-Friendly: Made from 100% recycled 100gsm paper
  • DL Size: Suitable for A4/A5 sheets folded appropriately
  • Self-Seal: Convenient closure for secure and efficient mailing
£21.00
£17.50 ex. VAT
£17.50
£21.00 inc. VAT
£21.00
£17.50 ex. VAT
£17.50
£21.00 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Wallet Self Seal 120gsm DL White (1000 Pack) KF97366

Q Connect Envelopes Wallet Self Seal 120gsm DL White 1000 Pack KF97366 163628 F
1000
Pack
  • Pack of 1000 self-seal DL envelopes
  • Suitable for A4/A5 sheet sizes
  • Made from durable 120gsm white paper
  • Convenient self-seal closure for easy mailing
£27.49
£22.91 ex. VAT
£22.91
£27.49 inc. VAT
£27.49
£22.91 ex. VAT
£22.91
£27.49 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Value Envelope Manilla Self Seal 80gsm C4 Manilla (250 Pack) WX3470

Value Envelope Manilla Self Seal 80gsm C4 Manilla 250 Pack WX3470 102795 F
250
Pack
  • C4 Size: Suitable for standard business correspondence and unfolded A4 documents.
  • Self-Seal: Features a convenient self-adhesive flap for quick, easy closure – no moisture needed.
  • Durable Quality: Crafted from high-quality 80gsm paper for a professional finish.
  • Large Pack: Contains 250 envelopes – ideal for both home and business use.
£18.54
£15.45 ex. VAT
£15.45
£18.54 inc. VAT
£18.54
£15.45 ex. VAT
£15.45
£18.54 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelopes Self Seal 100gsm C4 White (250 Pack) KF3458

Q Connect Envelopes Self Seal 100gsm C4 White 250 Pack KF3458 105110 F
250
Pack
  • Size: C4 - Perfect for A4 documents
  • Paper Weight: 100gsm - Quality white paper construction
  • Pack Quantity: 250 envelopes per pack
  • Convenient Closure: Features a self-seal flap for easy and secure mailing
£17.26
£14.38 ex. VAT
£14.38
£17.26 inc. VAT
£17.26
£14.38 ex. VAT
£14.38
£17.26 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 115gsm C3 Manilla (125 Pack) KF3408

Q Connect Envelope Pocket Self Seal 115gsm C3 Manilla 125 Pack KF3408 125942 F
125
Pack
  • Size: 457x324mm (C3) - Ideal for larger correspondence.
  • Strong & Reliable: Crafted from 115gsm paper for secure transit.
  • Self-Seal Closure: Quick and easy to use - no moisture needed.
  • Pack of 125: Perfect for both business and home use.
£27.81
£23.17 ex. VAT
£23.17
£27.81 inc. VAT
£27.81
£23.17 ex. VAT
£23.17
£27.81 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Value Envelope Pocket Self Seal 90gsm C4 Manilla (250 Pack) 638523

5 Star Value Envelope Pocket Self Seal 90gsm C4 Manilla 250 Pack 638523 889367 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Closure Type: Self-seal for convenience
  • Envelope Size: C4
  • Opening: Pocket access on the shorter side
£16.77
£13.97 ex. VAT
£13.97
£16.77 inc. VAT
£16.77
£13.97 ex. VAT
£13.97
£16.77 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Value Envelope Manilla Self Seal 115gsm C4 Manilla (250 Pack) WX3461

Value Envelope Manilla Self Seal 115gsm C4 Manilla 250 Pack WX3461 224100 F
250
Pack

  • Pack of 250 C4 Manilla Self Seal Envelopes

  • Fits unfolded A4 documents

  • Made from 115gsm heavyweight paper for a professional finish

  • Quick & easy self-adhesive flap for secure sealing

£22.43
£18.69 ex. VAT
£18.69
£22.43 inc. VAT
£22.43
£18.69 ex. VAT
£18.69
£22.43 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelope 25mm Gusset Peel and Seal 120gsm 381x254mm Manilla (100 Pack) KF3528

Q Connect Envelope 25mm Gusset Peel and Seal 120gsm 381x254mm Manilla 100 Pack KF3528 102004 F
100
Pack
  • Dimensions: 381 x 254 x 25mm
  • 25mm expanding gusset for bulky items
  • Pack of 100 durable 120gsm manilla envelopes
  • Strong peel and seal closure for secure mailing
£26.57
£22.14 ex. VAT
£22.14
£26.57 inc. VAT
£26.57
£22.14 ex. VAT
£22.14
£26.57 inc. VAT

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Order now for dispatch tomorrow

Value Envelope Self Seal 90gsm DL White (1000 Pack) WX3480

Value Envelope Self Seal 90gsm DL White 1000 Pack WX3480 154746 F
1000
Pack
  • Bulk Pack: Contains 1000 white DL envelopes.
  • Paper Quality: Made from 90gsm paper for durability.
  • Convenient Closure: Features a self-seal flap – no licking required!
  • Versatile Size: Designed for A5 documents or folded A4 sheets.
£27.76
£23.13 ex. VAT
£23.13
£27.76 inc. VAT
£27.76
£23.13 ex. VAT
£23.13
£27.76 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelopes Pocket Self Seal 90gsm C5 Manilla (500 Pack) J90021

5 Star Office Envelopes Pocket Self Seal 90gsm C5 Manilla 500 Pack J90021 133559 F
500
Pack
  • Pack Size: 500 manilla envelopes
  • Size & Type: C5 (229x162mm) with pocket opening
  • Convenient Closure: Features a reliable self-seal closure
  • Eco-Friendly: Made from 100% recycled materials
£13.21
£11.01 ex. VAT
£11.01
£13.21 inc. VAT
£13.21
£11.01 ex. VAT
£11.01
£13.21 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Gummed 80gsm C4 Manilla (250 Pack) KF3428

Q Connect Envelopes Pocket Gummed 80gsm C4 Manilla 250 Pack KF3428 112123 F
250
Pack
  • Suitable for A4 documents
  • Pack of 250 manilla envelopes
  • Reliable gummed flap for secure closure
  • C4 size - ideal for standard posting
£17.62
£14.68 ex. VAT
£14.68
£17.62 inc. VAT
£17.62
£14.68 ex. VAT
£14.68
£17.62 inc. VAT

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Order now for dispatch tomorrow

5 Star Value Envelope Pocket Self Seal 80gsm C5 Manilla (500 Pack) 638531

5 Star Value Envelope Pocket Self Seal 80gsm C5 Manilla 500 Pack 638531 889369 F
500
Pack
  • Size: C5
  • Quantity: 500 envelopes per pack
  • Self-seal closure for easy mailing
  • Pocket opening on the shorter side
£12.43
£10.36 ex. VAT
£10.36
£12.43 inc. VAT
£12.43
£10.36 ex. VAT
£10.36
£12.43 inc. VAT

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Order now for dispatch tomorrow

New Guardian Envelopes Gusset Peel/Seal 130gsm C4 Manilla (25 Pack) F27666

New Guardian Envelopes Gusset Peel Seal 130gsm C4 Manilla 25 Pack F27666 102300 F
25
Pack
  • Includes 25 durable manilla envelopes
  • Designed for A4 documents with a 25mm expanding gusset for bulky items
  • Crafted from durable 130gsm paper for reliable protection
  • Features a convenient peel and seal closure with Power-Tac adhesion
£24.98
£20.82 ex. VAT
£20.82
£24.98 inc. VAT
£24.98
£20.82 ex. VAT
£20.82
£24.98 inc. VAT

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Order now for dispatch tomorrow

New Guardian Envelopes Gusset 130gsm C4 Manilla (100 Pack) E27266

New Guardian Envelopes Gusset 130gsm C4 Manilla 100 Pack E27266 101376 F
100
Pack
  • Pack of 100 C4 Envelopes for A4 Documents
  • 25mm Expanding Gusset - Accommodates Bulky Items
  • Durable 130gsm Paper for Reliable Protection
  • Easy Peel & Seal Closure with Strong Power-Tac Adhesion
£64.21
£53.51 ex. VAT
£53.51
£64.21 inc. VAT
£64.21
£53.51 ex. VAT
£53.51
£64.21 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Self Seal 100gsm DL White (500 Pack) KF3440

Q Connect Envelopes Pocket Self Seal 100gsm DL White 500 Pack KF3440 174603 F
500
Pack
  • Suitable for A4/A5 sheet sizes
  • Pack of 500 self-seal envelopes
  • Made from 100gsm quality paper
  • Secure closure for reliable mailing
£14.99
£12.49 ex. VAT
£12.49
£14.99 inc. VAT
£14.99
£12.49 ex. VAT
£12.49
£14.99 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Machine Envelope Gummed 90gsm 162x238mm White (500 Pack) KF02897

Q Connect Machine Envelope Gummed 90gsm 162x238mm White 500 Pack KF02897 141752 F
500
Pack
  • Suitable for use in mailing machines
  • Contains 500 white, gummed envelopes
  • Oversized C5 size: 162 x 238mm
  • Strong 90gsm paper for reliable use
£25.56
£21.30 ex. VAT
£21.30
£25.56 inc. VAT
£25.56
£21.30 ex. VAT
£21.30
£25.56 inc. VAT

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Order now for dispatch tomorrow

New Guardian Envelope Pocket 130gsm C3 Manilla (125 Pack) C27013

New Guardian Envelope Pocket 130gsm C3 Manilla 125 Pack C27013 118797 F
125
Pack
  • Size: C3 (457 x 324mm) - Ideal for larger documents.
  • Quantity: 125 envelopes per pack - Great for business or home use.
  • Closure: Peel and Seal - Quick, easy, and secure.
  • Material: Durable 130gsm paper - Provides superior protection during transit.
£60.27
£50.22 ex. VAT
£50.22
£60.27 inc. VAT
£60.27
£50.22 ex. VAT
£50.22
£60.27 inc. VAT

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Order now for dispatch tomorrow

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White (100 Pack) F80275

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White 100 Pack F80275 103323 F
100
Pack
  • 100 high-quality envelopes
  • Fits A5 sheets folded once, or A4 sheets folded twice
  • Crafted from smooth, 120gsm white recycled paper
  • Ensures a secure, professional finish and saves time
£14.97
£12.47 ex. VAT
£12.47
£14.97 inc. VAT
£14.97
£12.47 ex. VAT
£12.47
£14.97 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Wallet Gummed 70gsm DL Manilla (1000 Pack) KF3413

Q Connect Envelopes Wallet Gummed 70gsm DL Manilla 1000 Pack KF3413 143767 F
1000
Pack
  • Size: 110 x 220mm
  • Quantity: 1000 envelopes per pack
  • Paper Weight: Lightweight 70gsm paper
  • Ideal For: A4/A5 documents, mailing and internal distribution
£25.39
£21.16 ex. VAT
£21.16
£25.39 inc. VAT
£25.39
£21.16 ex. VAT
£21.16
£25.39 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Self Seal 90gsm C4 White (250 Pack) KF02721

Q Connect Envelopes Self Seal 90gsm C4 White 250 Pack KF02721 105706 F
250
Pack
  • Suitable for A4 documents
  • Pack of 250 self-seal envelopes
  • Made from quality 90gsm white paper
  • Easy-seal closure for quick dispatch
£32.46
£27.05 ex. VAT
£27.05
£32.46 inc. VAT
£32.46
£27.05 ex. VAT
£27.05
£32.46 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White (250 Pack) M23270

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White 250 Pack M23270 121652 F
250
Pack
  • Secure & Professional: Ideal for confidential correspondence.
  • Durable 120gsm Paper: Offers reliable protection for documents.
  • Convenient Self-Seal Closure: No moisture adhesive needed.
  • Fits A5/A4 Sheets: Accommodates folded documents easily.
£36.04
£30.03 ex. VAT
£30.03
£36.04 inc. VAT
£36.04
£30.03 ex. VAT
£30.03
£36.04 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White (500 Pack) F23470

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White 500 Pack F23470 118888 F
500
Pack
  • Pack of 500: Contains 500 bright white C6 envelopes.
  • Secure & Confidential: Opaque blue interior for added privacy.
  • Durable Quality: Crafted from 120gsm paper for a premium feel.
  • Easy to Use: Features a convenient self-seal closure.
£60.66
£50.55 ex. VAT
£50.55
£60.66 inc. VAT
£60.66
£50.55 ex. VAT
£50.55
£60.66 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Value Envelope Plain Non Window 80gsm C4 Manilla (250 Pack) C480250MP

Value Envelope Plain Non Window 80gsm C4 Manilla 250 Pack C480250MP 809031 F
250
Pack
  • Pack of 250: Contains a generous supply of high-quality C4 manilla envelopes.
  • Self-Seal Closure: Features a convenient adhesive flap for easy, no-lick sealing.
  • A4 Compatible: Comfortably fits unfolded A4 paper (324x229mm size).
  • Durable 80gsm Paper: Offers reliable protection during mailing and transit.
£14.62
£12.18 ex. VAT
£12.18
£14.62 inc. VAT
£14.62
£12.18 ex. VAT
£12.18
£14.62 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Plain Peel and Seal 100gsm C4 White (250 Pack) KF03291

Q Connect Envelopes Pocket Plain Peel and Seal 100gsm C4 White 250 Pack KF03291 280222 F
250
Pack
  • Size: C4 (324 x 229mm) - Designed for A4 paper.
  • Quantity: Pack of 250 white envelopes.
  • Closure: Features a convenient peel and seal for a secure closure.
  • Paper Weight: Made with 100gsm paper for quality and durability.
£23.74
£19.78 ex. VAT
£19.78
£23.74 inc. VAT
£23.74
£19.78 ex. VAT
£19.78
£23.74 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Value Envelope Wallet Self Seal 80gsm DL White (1000 Pack) 638507

5 Star Value Envelope Wallet Self Seal 80gsm DL White 1000 Pack 638507 889013 F
1000
Pack
  • Pack Size: 1000 white envelopes per pack
  • Closure Type: Features a convenient self-seal closure
  • Opening Style: Wallet opening designed for access along the longer side
  • Paper Weight: Made from durable 80gsm paper
£18.39
£15.32 ex. VAT
£15.32
£18.39 inc. VAT
£18.39
£15.32 ex. VAT
£15.32
£18.39 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Gusset Peel and Seal 120gsm C4 White (125 Pack) KF02890

Q Connect Envelopes Gusset Peel and Seal 120gsm C4 White 125 Pack KF02890 142684 F
125
Pack
  • Suitable for A4 documents
  • 125 envelopes per pack
  • Features a 25mm expanding gusset
  • Secure peel and seal closure
£26.80
£22.33 ex. VAT
£22.33
£26.80 inc. VAT
£26.80
£22.33 ex. VAT
£22.33
£26.80 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Value Envelope Pocket Self Seal 90gsm C4 White (250 Pack) 638558

5 Star Value Envelope Pocket Self Seal 90gsm C4 White 250 Pack 638558 889016 F
250
Pack
  • Pack Size: 250 high-quality envelopes
  • Size: C4 - Ideal for A4 documents folded in three
  • Closure: Reliable self-seal for easy mailing
  • Paper Weight: 90gsm - Durable and professional feel
£20.49
£17.07 ex. VAT
£17.07
£20.49 inc. VAT
£20.49
£17.07 ex. VAT
£17.07
£20.49 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Self Seal 90gsm C5 Manilla (500 Pack) KF3441

Q Connect Envelopes Pocket Self Seal 90gsm C5 Manilla 500 Pack KF3441 109720 F
500
Pack
  • Pack Size: 500 manilla envelopes
  • Size: C5, fits A4 folded in thirds or A5 unfolded
  • Paper Weight: 90gsm for reliable use
  • Closure Type: Convenient self-seal closure
£21.55
£17.96 ex. VAT
£17.96
£21.55 inc. VAT
£21.55
£17.96 ex. VAT
£17.96
£21.55 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Self Seal 115gsm C4 Manilla (250 Pack) KF3461

Q Connect Envelopes Pocket Self Seal 115gsm C4 Manilla 250 Pack KF3461 160611 F
250
Pack
  • Suitable for A4 documents
  • Pack of 250 manilla envelopes
  • Made with 85% recycled manilla
  • Heavyweight 115gsm paper with self-seal closure
£21.54
£17.95 ex. VAT
£17.95
£21.54 inc. VAT
£21.54
£17.95 ex. VAT
£17.95
£21.54 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelopes Pocket Self Seal 80gsm C5 Manilla (500 Pack) KF3516

Q Connect Envelopes Pocket Self Seal 80gsm C5 Manilla 500 Pack KF3516 122157 F
500
Pack
  • Pack Size: 500 envelopes per pack
  • Size & Compatibility: C5 size, fits A4 folded or A5 unfolded
  • Material: Durable 80gsm paper
  • Convenience: Features a self-seal closure for easy use
£19.32
£16.10 ex. VAT
£16.10
£19.32 inc. VAT
£19.32
£16.10 ex. VAT
£16.10
£19.32 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Plain Envelopes

Find plain envelopes for your mailing and office requirements. Our extensive range includes a variety of sizes, including DL, C4, C5 and B4. Peel and seal and self seal options are also available.

We stock bulk packs to suit businesses and home offices, as well as a wide range of quantities. Choose from different paper weights and colours like white and manilla.

We have the right envelope for your letters, documents and invoices. Envelopes with recycled paper are also available here.

Find more types of envelopes in our full range.

Frequently Asked Questions

Q. Will C5 envelopes fit A4 paper?

Q. What is a windowless envelope?