5 Star Office Envelopes Pocket Self Seal Window - C5 - Pack of 500

These 5 Star Office C5 envelopes feature a secure self-seal closure for easy and efficient use. De...

Best current price£17.30from UK Office Direct

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UK Office Direct5 Star Office Envelopes Pocket Self Seal Window [Pack 500] -
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B&QB&Q - 5 Star Office 940411 C5 90 Gsm Pocket Self Seal Window EnvelopeWhite (Pack Of 500)
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Office StationeryC5 Window Pocket Envelope Self Seal 90gsm 229x162mm White Pack of 500
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Product Information

Full details

The 5 Star Office C5 Pocket Envelopes are designed for busy office environments and administrative professionals who require a fast, reliable solution for professional mailing. Featuring a convenient self-seal closure and a secure opaque interior, these envelopes streamline document preparation while ensuring privacy for sensitive correspondence. While they offer excellent utility for standard business mailings, users should note that the window placement is fixed, making them unsuitable for documents with non-standard address layouts.

All features

Model Part Number940411
Brand5 Star Office

Extended Product Information

FAQs

What is the weight of the paper used in these envelopes?

These envelopes are made with 90gsm paper, which is a standard, professional weight for office correspondence.

What are the dimensions of the window?

The window measures 100mm by 45mm.

Can these envelopes be used in a laser printer?

Yes, they are generally compatible with laser printers, provided you use the manual feed tray to avoid potential jams caused by the envelope construction.

How many envelopes come in a pack?

Each pack contains 500 individual C5 envelopes.

Is the envelope opaque?

Yes, it includes a blue interior print to ensure that contents remain private and cannot be read through the paper.

Is the closure adhesive or gummed?

It is a self-seal closure, which uses a pressure-sensitive adhesive strip.

Troubleshooting

The self-seal flap does not stick securely

Ensure the envelope is not overfilled, as excess pressure can cause the seal to fail; if the adhesive strip is dry, press firmly for 3-5 seconds to activate the bond.

Address is not visible through the window

Check your document margin settings to match the 49mm left/20mm bottom alignment requirement; use a test sheet to verify alignment before printing on the final document.

Pros and Cons

Pros

  • Fast self-seal mechanism saves time during large mailings
  • Blue opaque interior adds a layer of security for sensitive documents
  • Standardized window position fits most common business invoice formats
  • Robust 90gsm paper weight provides a professional appearance

Cons

  • Fixed window position may not align with all custom address templates
  • Self-seal adhesive can lose effectiveness if stored in extreme temperatures
  • Not suitable for heavy documents or objects thicker than standard paper stacks

Setup, Compatibility & Care

To ensure optimal performance, verify that your printer or document software is configured for a windowed envelope layout before printing your address labels. For storage, keep the box in a cool, dry place to prevent the self-seal adhesive from drying out or becoming prematurely tacky. Avoid storing the envelopes in direct sunlight or areas with high humidity, as this can cause the paper to ripple or the flaps to seal accidentally. When loading these into an automatic mailing machine, ensure the stack is aligned correctly to prevent paper jams caused by the thickness of the window area.

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