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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 12 products
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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

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

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

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Peel/Seal 130gsm C4 Manilla (250 Pack) J26339

New Guardian Envelope Peel Seal 130gsm C4 Manilla 250 Pack J26339 111291 F
250
Pack
  • Pack of 250: Contains 250 durable manilla envelopes
  • C4 Size: Designed for unfolded A4 sheets
  • 130gsm Paper: Offers exceptional strength and quality
  • Peel and Seal with Tear Strip: Ensures secure dispatch and easy opening
£68.28
£56.90 ex. VAT
£56.90
£68.28 inc. VAT
£68.28
£56.90 ex. VAT
£56.90
£68.28 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Armour Envelopes Gusset 130gsm C4 Manilla (100 Pack) A28113

New Guardian Armour Envelopes Gusset 130gsm C4 Manilla 100 Pack A28113 114759 F
100
Pack
  • Durable Material: 130gsm paper with woven polyester reinforcement.
  • Secure Closure: Peel and seal with Power-Tac adhesion for a reliable bond.
  • A4 Compatible: C4 size, suitable for A4 documents.
  • Expanding Gusset: 50mm gusset accommodates thicker contents.
£138.18
£115.15 ex. VAT
£115.15
£138.18 inc. VAT
£138.18
£115.15 ex. VAT
£115.15
£138.18 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla (250 Pack) D26103

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla 250 Pack D26103 139227 F
250
Pack
  • Pack Size: 250 envelopes
  • Envelope Size: C5
  • Paper Weight: 130gsm for durability
  • Closure Type: Self-seal for easy & secure use
£40.63
£33.86 ex. VAT
£33.86
£40.63 inc. VAT
£40.63
£33.86 ex. VAT
£33.86
£40.63 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelopes Pocket 130gsm C5 Manilla (250 Pack) L26039

New Guardian Envelopes Pocket 130gsm C5 Manilla 250 Pack L26039 101292 F
250
Pack
  • Size: C5
  • Paper Weight: 130gsm
  • Closure: Power-Tac peel and seal with tear strip
  • Pack Quantity: 250 envelopes
£37.73
£31.44 ex. VAT
£31.44
£37.73 inc. VAT
£37.73
£31.44 ex. VAT
£31.44
£37.73 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Strong Pocket Envelopes Peel/Seal 130gsm DL Manilla (500 Pack) E26503

New Guardian Strong Pocket Envelopes Peel Seal 130gsm DL Manilla 500 Pack E26503 103498 F
500
Pack
  • 500 Premium Envelopes: Pack contains 500 manilla envelopes
  • Strong and Durable: Built to withstand tough postal handling
  • Secure Peel and Seal: Reliable closure for a professional finish
  • DL Size: Ideal for standard letters and documents
£55.48
£46.23 ex. VAT
£46.23
£55.48 inc. VAT
£55.48
£46.23 ex. VAT
£46.23
£55.48 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope 25mm Gusset P/Seal 130gsm 381x254mm Manilla (100 Pack) M27466

New Guardian Envelope 25mm Gusset P Seal 130gsm 381x254mm Manilla 100 Pack M27466 106599 F
100
Pack
  • Pack Size: 100 manilla envelopes
  • Expanding Gusset: 25mm for thicker contents
  • Durable Paper: Crafted from 130gsm paper
  • Secure Closure: Features a simple peel and seal with Power-Tac adhesion
£102.32
£85.27 ex. VAT
£85.27
£102.32 inc. VAT
£102.32
£85.27 ex. VAT
£85.27
£102.32 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian 50mm Gusset Armour Envelope 130gsm 381x279mm Manilla (100 Pack) H28313

New Guardian 50mm Gusset Armour Envelope 130gsm 381x279mm Manilla 100 Pack H28313 103116 F
100
Pack
  • Durable & Secure: 100 heavyweight manilla envelopes for safe mailing.
  • Expanding Gusset: 50mm gusset accommodates bulky items.
  • Strong Closure: Peel and seal with reliable Power-Tac adhesion.
  • Reinforced Material: 130gsm paper with woven polyester for exceptional strength.
£221.42
£184.52 ex. VAT
£184.52
£221.42 inc. VAT
£221.42
£184.52 ex. VAT
£184.52
£221.42 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Self Seal 130gsm C4 Manilla (250 Pack) L26303

New Guardian Envelope Self Seal 130gsm C4 Manilla 250 Pack L26303 104882 F
250
Pack
  • Size: C4 - Perfectly sized for A4 sheets.
  • Paper Weight: 130gsm - Durable and reliable protection.
  • Closure: Self-Seal – Quick and convenient for secure mailing.
  • Quantity: Pack of 250 – Ideal for office and home use.
£73.28
£61.07 ex. VAT
£61.07
£73.28 inc. VAT
£73.28
£61.07 ex. VAT
£61.07
£73.28 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Wallet Envelope Peel and Seal 130gsm C5 Metallic Gold (250 Pack) BLK93029

Blake Wallet Envelope Peel and Seal 130gsm C5 Metallic Gold 250 Pack BLK93029 453105 F
250
Pack
  • Pack Size: 250 Metallic Gold envelopes.
  • Paper Weight: Crafted from high-quality 130gsm paper.
  • Envelope Size: C5 – fits A4 folded or A5 unfolded.
  • Closure Type: Convenient Peel and Seal for easy mailing.
£140.90
£117.42 ex. VAT
£117.42
£140.90 inc. VAT
£140.90
£117.42 ex. VAT
£117.42
£140.90 inc. VAT

Order now for dispatch today

Order now for dispatch today

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?