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UK Office Direct£21.71Visit shop 5 Star Office Envelopes Gusset 25mm Peel and Seal [Pack 125] -
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The 5 Star Office C4 Window Envelopes are designed for administrative professionals and businesses that frequently mail bulky documents like catalogues, booklets, and certificates. With their heavy-duty 120gsm construction and a 25mm expandable V-base gusset, these envelopes offer superior protection and space for large items, though their increased thickness means they are best suited for high-priority mail rather than standard daily correspondence.
| Model Part Number | 930183 |
|---|---|
| Brand | 5 Star Office |
While the paper is high-quality, most desktop printers cannot accommodate the thickness of these gusseted envelopes. It is recommended to use labels applied to the front.
These envelopes are made from 120gsm paper, which is significantly thicker and more durable than standard office envelopes.
Each box contains 125 envelopes.
Yes, the C4 size is specifically designed to fit A4 documents without the need for folding.
The adhesive is long-lasting if stored in a cool, dry environment, but it should be used within a reasonable timeframe to ensure the best seal quality.
The window measures 40x100mm.
Ensure the surface of the paper is free from dust or debris and that you are applying firm, even pressure along the entire flap.
Verify that your print layout is configured for the window dimensions (40x100mm) and follows the specified offset of 25mm from the edge and 213mm from the bottom.
Check if the contents exceed the 25mm thickness capacity. If the contents are too bulky, consider using a larger packaging solution.
For optimal results, ensure your document addresses are printed in the correct position to align with the 40x100mm window. When packing, place your documents centrally to take full advantage of the V-base gusset; avoid overstuffing beyond the 25mm limit to prevent the adhesive seal from failing. Store these envelopes in a cool, dry place away from direct sunlight to preserve the integrity of the adhesive strip. The peel and seal backing should only be removed immediately before closing the envelope to ensure the glue remains tacky.
