Setup, Compatibility & Care
To maximize the life and performance of these envelopes, store them in a cool, dry environment. Avoid extreme humidity, as this can activate the self-seal adhesive prematurely or cause the paper to warp. When printing, ensure your document software is set to a C5 paper size. Align your text fields to match the 45 x 90mm window dimensions. Before sealing a large batch, it is recommended to verify the window alignment with a single test print to ensure the recipient's address is fully visible without obstruction. If hand-filling, ensure the folded document does not exceed the envelope's internal capacity to avoid bulging or tearing at the seams.