Setup, Compatibility & Care
To ensure the best results, place your document flat against the cardboard backing before removing the adhesive strip liner. Avoid overstuffing the envelope beyond its capacity, as this can weaken the side seams. Store the envelopes in a cool, dry environment away from direct sunlight; extreme humidity or heat can affect the integrity of the peel-and-seal adhesive. Since these envelopes are size C4, ensure your mailer fits within standard large letter dimensions to avoid additional surcharges.