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Joybuy UK£3.49Visit shop Triplast Envelopes Paper Self Seal Window 110X220mm White Pack Of 100
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Triplast DL-size window envelopes are designed for office professionals and home users who require a secure, efficient, and professional method for mailing documents like invoices and statements. These envelopes feature a convenient self-seal adhesive and an opaque security tint, though users should ensure their document addresses are perfectly aligned with the window to maintain a clean, professional appearance during transit.
| Brand | Triplast |
|---|
DL size is a standard international envelope size measuring 110mm x 220mm, designed to hold an A4 sheet of paper folded into thirds.
Yes, these envelopes are compatible with most standard laser and inkjet printers.
Yes, the product is fully recyclable. Please check your local recycling guidelines for paper products.
The internal blue tint acts as a security feature that obscures the contents of the envelope, preventing sensitive information from being easily read through the paper.
Yes, the self-seal adhesive is designed to provide a secure, permanent bond once pressed closed.
The paper is PEFC certified, which ensures it is sourced from sustainably managed, audited forests.
Ensure the envelope is fed correctly according to your printer's manual and check that the self-seal flap is tucked or flat before entering the feed.
Ensure the adhesive strip is free of paper dust or debris, and press firmly across the entire width of the flap for a few seconds.
Adjust your document's top and side margins in your word processor to align the address with the envelope's window specifications.
For optimal use, store the envelopes in a cool, dry place to prevent the self-seal adhesive from drying out or activating prematurely. When printing, ensure your document margins are set to accommodate the DL-size window placement. These envelopes are fully recyclable, so you can dispose of them in standard paper recycling bins once the contents are removed. Since they are PEFC certified, they meet high standards for sustainable sourcing, making them a responsible choice for office and commercial procurement.
