Eliminate envelope addressing time with our Imprinted Business Envelopes. These high quality envelopes are perfect for all your office needs. Our durable Kraft Mailing envelopes are the perfect way to send your larger packages. Available in 10" x 13", 9" x 12" and 6" x 9" sizes. Mailing envelopes are brown or white Kraft and have an open end. Our complete selection of business envelope sizes are available at unbeatable prices. Available in No. 10, No. 9, and No. 6 ¾" sizes. Business envelopes can be ordered with a regular or poly window.