Self Seal Envelopes
Self Seal Envelopes
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£22.74 inc. VAT each
Product Information
Product Information
Our white self seal wallet envelopes are a simple, reliable choice for everyday business post. With a clean professional finish, strong paper quality, and a quick self seal closure, they’re perfect for invoices, letters, statements, and general office correspondence.
Each envelope is made using high-opacity PEFC-accredited paper to keep contents secure and private. Depending on size, these wallet-style envelopes open on either the short or long side, making document insertion fast and consistent whether you’re mailing at home or in a busy workplace.
Key Benefits
- Self seal closure: quick, clean sealing with no moisture required
- Highly opaque paper: protects confidential documents
- PEFC paper accredited: responsibly sourced and recyclable
- Wallet-style design: ideal for frequent mailing and easy insertion
- Windowed & non-windowed options: suit different mailing needs
Size Guide – Self Seal Wallet Envelopes
- C4 windowed: 324x229mm – 100gsm – Window size: 40x105mm – Window position: 24mm from left, 213mm from bottom
- C4 non-windowed: 324x229mm – 100gsm
- C5 windowed: 162x229mm – 90gsm – Window size: 45x90mm – Window position: 20mm from left, 60mm from bottom
- C5 non-windowed: 162x229mm – 90gsm
- DL windowed: 110x220mm – 90gsm – Window size: 35x90mm – Window position: 19mm from left, 18mm from bottom
- DL non-windowed: 110x220mm – 90gsm
Product Details
- Seal type: Self seal
- Colour: White outer & white inner
- Paper weight: 90gsm or 100gsm depending on size
- Seam: Outside seam
- Window type: Windowed or non-windowed options available
- Eco certification: PEFC accredited paper
- For size guidance only this would replace the Pitney Bowes codes: PBEX620SS, PBEX630SS, PBEX920SS, PBEX930SS, PBEX320SS, PBEX330SS
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 are available?
These self seal wallet envelopes come in C4 (324mm x 229mm), C5 (162mm x 229mm) and DL (110mm x 220mm), in boxes of 250 or 500 depending on size.
How does the self seal closure work?
Each envelope has a self seal strip, so it closes with a firm press rather than needing to be licked or moistened, making sealing quick and mess-free.
Are windowed versions available?
Yes - each size is available windowed or non-windowed. For example, the C5 window measures 45x90mm and sits 20mm from the left and 60mm from the bottom.
What paper weight are these envelopes made from?
Paper weight varies by size - C4 envelopes use 100gsm paper while C5 and DL use 90gsm, both highly opaque to keep documents confidential.
Is the paper eco-friendly?
Yes - it's PEFC accredited, meaning it comes from responsibly sourced, recyclable paper stock.
How quickly can I get these delivered?
Orders placed before our daily cut-off are despatched the same working day, with trade pricing that improves the more you buy and free UK delivery on orders over 100 pounds.
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.
