Are you looking for a mailing solution that combines functionality with a striking visual impact? Our blue envelopes in DIN C6/5 format (114 x 229 mm) are the perfect choice for businesses that value a professional image. The color blue immediately conveys objectivity, trust, and reliability to the recipient—ideal qualities for your business correspondence.
These special window envelopes are optimized for machine processing. As high-quality mailing envelopes, they significantly streamline workflows when handling large volumes of mail. The generous DIN C6/5 size also provides ample space for double-folded A4 letters or larger inserts that often do not fit in a standard DL envelope.
The DIN Long envelope with a window in blue impresses with its first-class craftsmanship and ensures that your mailings arrive safely and look great when they reach the recipient. Thanks to the water-activated adhesive, the flap seals securely when moistened, ensuring a reliable seal whether sealed by hand or by machine. At Kuvertwelt, you benefit from attractive volume discounts—so your mailings remain economical and professional even with large quantities.