Thank you for visiting the Interstate website! Three Generations of Envelope Expertise Interstate Envelope Manufacturing Corp. is a third generation family owned and operated business. Our manufacturing/warehouse facility consists of a 53,000 square foot facility in Maspeth, Queens, New York. We produce over 8 million envelopes per day, and ship worldwide. Service and Turnaround Interstate Envelope has, over the years, gained a reputation for unsurpassed commitment to service and quality. Our standard workweek consists of 24 hours per day, five days per week, with additional hours as needed. We have thousands of envelope and window dies in stock, of all styles, shapes and sizes. Our expertise lies in all types of paper-based envelopes, whether they are plain or printed, single or multiple windows, coated or uncoated stock. Interstate Envelope Manufacturing Corp. is certified as a Minority and Women Owned Business Enterprise by both the New York State Department of Economic Development, Division of Minority and Women's Business Development, and the New York City Department of Business Services, Division of Economic and Financial Opportunity. Affiliations Interstate is a member of the Envelope Manufacturers Association (EMA), of which Alfred Wilkowski, President of Interstate, serves on the Board of Directors, is the Chairman of the Plant Management Committee, and Vice-Chairman of the Finance Committee. In addition, Interstate Envelope is also an active member of the Envelope Institute of America (EIA). Government Work Interstate Envelope has set up an exclusive E-mail address specifically for government agencies, govt@interstate-envelope.com in order to provide the agencies with the best attention, service, and response possible. We look forward to developing a long-term relationship with your agency. Contact us if you have any questions or would like any further information.