No. 10 Envelopes available from small to large quantities, various colors, finishes and flaps - This popular envelope is known commonly as a business size envelope. #10 Envelopes are 4-1/8-in-x-9-1/2-in and holds a letter paper perfectly if folding the paper 3-ways. Over the years and with unique flaps and papers, this envelope has grown more popular and has crossed design barriers from simple business mailings to social, holiday and special occasions. In addition, find the matching paper or card stock to complete the project to its perfection!
