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B&Q£19.62Visit shop B&Q - Whitebox Dl Window 90Gsm Self Seal EnvelopeWhite (Pack Of 1000)
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Designed for busy office environments and professional mailing, these White Box DL window envelopes provide an efficient solution for high-volume correspondence. With a standard 110 x 220mm size and a convenient self-seal closure, they eliminate the mess of traditional gummed envelopes; however, because they utilize a self-seal adhesive, users should store them in a cool, dry place to prevent premature sticking.
| Model Part Number | WX3481 |
|---|---|
| Brand | White Box |
The envelopes themselves are designed for manual insertion; do not feed these through a laser printer as the self-seal adhesive may melt or clog the rollers.
These envelopes are made from 90gsm paper, which is a standard, professional weight for office correspondence.
Yes, provided they are stored in a cool, dry environment away from direct sunlight to preserve the adhesive.
No, the self-seal strip is pressure-sensitive and requires no water or moisture.
An A4 sheet of paper folded into thirds (DL fold) fits perfectly inside these envelopes.
Ensure no paper debris is trapped on the adhesive strip and apply firm, even pressure across the flap.
Check your document print settings and ensure the address is formatted to sit within the 35 x 90mm bounds.
To ensure optimal performance, verify that your document printing templates align with the 35 x 90mm window position (19mm in, 18mm up). When filling the envelopes, ensure your documents are folded tightly to avoid catching on the window film. For care, keep the envelopes in their original packaging in a climate-controlled office space. Avoid storing near heat sources, as the pressure-sensitive adhesive strip may become tacky or degrade over time.
