Top 10 Strong Envelopes Passport Size UK – Envelopes

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1. iSOUL

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10Pcs A4 Envelopes iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope Pack of 10

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iSOUL #ad - Environment friendly as they made from recycled materials. In the front lower left-hand corner, it is Pre-printed with Words “Do Not Bend” which ensures to keep the document safe and flat.

Be free from the further mess of Gum or any other adhesive since no moisture is needed. Peal & seal: simply remove the strip and press the flap down to seal. Includes: a4 c4 324mm x 229mm manilla Hard Board Backed Envelopes Do Not Bend Envelope. These are ideal for both professional and personal use. Multi purpose: our large letter a4 posting envelopes are great for mailing holiday cards, greeting cards, dinner money, announcements, invitations, photos, letters, wage slips, pay slips, business office home and personal use.
BrandiSOUL #ad
ManufactureriSOUL #ad
Height0.04
Length12.76
Width9.02
Part NumberIS-2020-ENVELOPES 10PK
ModelISOUL-2020-ENVELOPES 10PK

2. EPOSGEAR

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EPOSGEAR® A6 / C6 162mm x 114mm Brown/Manilla Strong Hard Card Board Backed Peel and Seal Printed Please Do Not Bend Envelopes 10

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EPOSGEAR #ad - Ideal for sending important documents and other items which require care whilst handling. Peel & seal function on the envelopes provide secure closure. Brand new high quality 120gsm manilla board-backed envelopes. Envelopes read "Please Do Not Bend" in red text. Vat receipt provided with all purchases. Dimensions: width - 162mm. Length - 114mm.
BrandEPOSGEAR #ad
ManufacturerEPOSGEAR #ad
Height0.01
Length6.38
Width4.49
Part NumberBBEMC6

3. SALTECH

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5 X A4 Board Back Manila Envelopes. "Please Do Not Bend" Written On Each Envelope. Size- 324mm x 229mm .Self Seal Secure Envelopes. 5 ENVELOPES

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SALTECH #ad - Self seal-simply remove the strip and press the flap down to seal. High quality and steady envelopes which will keep your documents safe. High quality strong self Seal adhesive strip 10mm wide, gives an extra security. Pack of 5 envelopes. Lightweight - Saves your money by reducing postage cost. Each envelope is printed "Please do no bend" in red.
BrandSALTECH #ad
ManufacturerSALTECH #ad
Height0.2
Length12.6
Width8.66
Part Number225RT

4. ARPAN

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Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Pack of 125

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ARPAN #ad - 100% environment friendly as they made from recycled materials. Lightweight - Saves your money by reducing postage cost. Can apply sticky labels to write an address if required, Quick and Easy packaging. Gives a professional finish to your parcel. High quality strong self Seal adhesive strip 10mm wide, gives an extra security.
BrandARPAN #ad
ManufacturerARPAN #ad
Part NumberPM-C4-PK125
ModelPM-C4-PK125

5. Blake

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Pack of 125, Blake Purely Packaging C4 A4 324 x 229 mm Board Back Pocket Peel & Seal Envelopes 13935 Manilla

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Blake #ad - Heavy duty board Back to protect certificates, photographs, prints and more. Printed please do not bend on the face for extra safety. Strong peel & seal closure for ease of use, additional security and longer shelf life. Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake.
BrandBlake #ad
ManufacturerBlake Envelopes #ad
Height18.5 cm (7.28 Inches)
Length32.5 cm (12.8 Inches)
Width24 cm (9.45 Inches)
Part Number13935
Model13935

6. Blake

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Pack of 50, Blake Office C5 162 x 229 mm 120 gsm Peel & Seal Wallet Envelopes 34214 Ultra White Wove

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Blake #ad - Quality 120 gsm FSC Certified Paper. Attractive pack for safe and convenient storage. Secure peel & seal closure for added security and ease of sealing. Blue opaque ensures total privacy. Make a difference to your mail with these quality Premium Office envelopes by Blake.
BrandBlake #ad
ManufacturerBlake Envelopes #ad
Height0.01
Length22.9 cm (9.02 Inches)
Width6.38
Part Number34214
Model34214

7. iSOUL

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20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope

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iSOUL #ad - Be free from the further mess of Gum or any other adhesive since no moisture is needed. In the front lower left-hand corner, it is Pre-printed with Words “Do Not Bend” which ensures to keep the document safe and flat.

Peal & seal: simply remove the strip and press the flap down to seal. Environment friendly as they made from recycled materials. These are ideal for both professional and personal use. Includes: 20 x a4 c4 324mm x 229mm manilla Hard Board Backed Envelopes Do Not Bend Envelope. Multi purpose: our large letter a4 posting envelopes are great for mailing holiday cards, greeting cards, letters, pay slips, dinner money, announcements, photos, wage slips, invitations, business office home and personal use.
BrandiSOUL #ad
ManufactureriSOUL #ad
Height0.01
Length12.76
Width22.9 cm (9.02 Inches)
Part NumberIS-2020-ENVELOPES
ModelA4 ENVELOPES 20PCS

8. ARPAN

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Arpan 229mm x 162mm A5 C5 Manilla Hard Board Backed Envelopes Do Not Bend Pack of 50

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ARPAN #ad - Gives a professional finish to your parcel. Lightweight - Saves your money by reducing postage cost. High quality strong self Seal adhesive strip 10mm wide, gives an extra security. Can apply sticky labels to write an address if required, Quick and Easy packaging. 100% environment friendly as they made from recycled materials.
BrandARPAN #ad
ManufacturerARPAN #ad
Part NumberPM-C5-PK50
ModelPM-C5-PK50

9. Triplast

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Posting & Storing Important Documents, Triplast 10 x A4 C4 Manilla Hard Board Back Envelopes 324 x 229mm, Perfect for Mailing, Cardboard Backed Please Do Not Bend Envelope with Peel & Seal Strip

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Triplast #ad - A mailing essential: these c4 rigid mailers are designed to contain unfolded A4 paper or A3 paper folded in half - they're perfect for posting & storing certificates, photos, ID cards, passports, legal documents, currency, artwork, gift cards, etc.

You may write on them directly to eliminate the need for extra address labels. Eco-friendly: made from 100% recycled material, sustainable & environmentally conscious packaging choice for office, fully kerbside recyclable & biodegradable - these hard back envelopes are a plastic-free, school & home use. Do not bend: 120gsm kraft paper front & 1000 micron board back construction offers all-round protection & rigidity to keep contents flat, crease-free & safe. Save on packing & postage: a more cost-effective & waste-free alternative to all board envelopes, these light yet sturdy card backed envelopes are also cheaper to post.

Quick, easy & cost by providing a strong & secure: built-in peel & hassle-free seal while also offering extended shelf-life over self seal envelopes - just remove the strip & seal strip reduces packing time & press the flap down to seal!. Please do not bend" is printed in large red font on the front to caution all handlers.
BrandTriplast #ad
ManufacturerTriplast #ad
Height0.08
Length9.02
Weight0.06 kg (0.12 Pounds)
Width12.76
Part NumberA4 C4
ModelA4 C4
WarrantyGreat Britain

10. Blake

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Pack of 10, Blake Purely Packaging C4 324 x 229 x 25 mm 130 gsm Gusset Pocket Peel and Seal Envelopes 1991/10 PR Manilla

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Blake #ad - Peel and Seal. Model number: 1991/10 PR. Useful for catalogues, books etc. Made from high quality paper.
BrandBlake #ad
ManufacturerBlake Envelopes #ad
Height0.01
Length12.76
Width9.02
Part Number1991/10 PR
Model1991/10 PR