Functionality, availability, selection – Elco offers the most comprehensive selection of business envelopes with over 300 different types available ex stock – if urgent within 24 hours.\n\nThe premium mark of Elco. Top quality envelopes in all popular formats and designs.\n\n- Top quality bright white paper, FSC paper\n- An attractive and unique internal print\n- Internal print made of 100% watercolor\n- Window made of transparent film\n- Available with an Optifix® peel and seal flap and Optimail® gummed flap