Measuring 3.625 x 6.5 inches, the 6 3/4 business envelope is great for regular office use. Once sealed, these security tinted envelopes keep the content private, even when viewed against bright light. This security feature makes it ideal for sending checks and confidential documents. This particular 6 3/4 office envelope has a peel-and-seal closure mechanism that delivers non-messy and moisture-free sealing. The size of the envelope is much more compact when compared to #9 and #10 envelopes. It can accommodate a variety of document sizes and can be used as return envelopes. Made from 24 lbs white paper, this envelope has a window-less design that’s perfect for regular office correspondence.