Gummed Envelopes
Gummed Envelopes
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£11.94 inc. VAT each
Product Information
Product Information
Our white gummed business envelopes are a dependable everyday option for offices, home working, and high-volume mailing. Made from 90gsm high-opacity paper, they keep your documents secure and presentable, with a classic gummed flap that delivers a strong, tamper-resistant seal.
These envelopes are designed for smooth, consistent insertion whether you’re feeding them through a folding/inserting machine or packing by hand. Choose between windowed and non-windowed styles in DL and C5 sizes to suit invoices, letters, statements, and general business post.
Key Benefits
- Traditional gummed seal: strong, reliable closure for daily mailing
- High opacity paper: protects confidential contents
- Machine & hand friendly: consistent insertion with fewer stoppages
- PEFC accredited paper: responsibly sourced and recyclable
- Windowed & non-windowed options: flexible for different mailing needs
Size Guide – Gummed Envelopes
- DL windowed: 110x220mm – 90gsm – Window size: 35x90mm – Window position: 19mm from left, 18mm from bottom
- DL non-windowed: 110x220mm – 90gsm
- C5 windowed: 162x229mm – 90gsm – Window size: 45x90mm – Window position: 20mm from left, 60mm from bottom
- C5 non-windowed: 162x229mm – 90gsm
Product Details
- Seal type: Gummed
- Colour: White outer & white inner
- Paper weight: 90gsm
- Seam: Outside seam
- Window type: Windowed or non-windowed
- Eco certification: PEFC accredited materials
- For size guidance only this would replace the Pitney Bowes codes: PBENV15, PBENV16, PBENV8, PBENV5
Please note: on windowed envelopes there may be a 2mm tolerance in window position from the left-hand side.
Please note: due to manufacturer tolerances, actual item dimensions may vary by 10–20mm. If precise sizing is important for your project, we strongly recommend requesting a sample before placing your order.
Fast UK Delivery
Fast UK Delivery
All of our products are manufactured and dispatched right here in our own UK warehouse, which means we can offer some of the fastest turnaround times in the country. And because everything is produced in the UK (unlike many other providers), you’ll never have to worry about customs delays or surprise charges. Delivery is calculated at checkout based on order value - free over £100, from £6.95 under that or select Next Day delivery upgrade for only £9.95. All orders are shipped flat-packed for maximum efficiency.
Product Reviews
Product Reviews
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Frequently Asked Questions
What sizes do these gummed envelopes come in?
These envelopes are available in DL (110mm x 220mm, box of 500) and C5 (162mm x 229mm, box of 250) sizes.
Can I get these with or without a window?
Yes - both DL and C5 sizes are available windowed or non-windowed. On the windowed DL, the window measures 35x90mm positioned 19mm from the left and 18mm from the bottom.
How do these envelopes seal?
They use a classic gummed flap - simply moisten the seal to create a strong, tamper-resistant closure suited to daily business post.
What paper weight is used and why does it matter?
Each envelope is made from 90gsm high-opacity paper, which helps keep invoices, letters and statements private by preventing contents from showing through.
Are these envelopes recyclable?
Yes - the paper is PEFC accredited, meaning it's responsibly sourced and recyclable.
Are these suitable for machine feeding as well as hand packing?
Yes - they're designed for smooth, consistent insertion whether fed through a folding/inserting machine or packed by hand.
Why Choose Us
Free UK Delivery Available
Choose from a few delivery options including FREE delivery to mainland UK on orders over £100.
Trusted Supplier
Over 20 years’ experience in the postal industry under Mailcoms Ltd.
UK Based
All products are printed and made in the heart of England, keeping our carbon footprint as low as possible.

