Staples - Gummed Business Envelopes, 4 3/16" x 9", 1000/Box (381911/17045) - White

Choose these gummed double-window envelopes for mailing correspondence. Each one is heavily gummed, making it easy to close when moisture is applied, while the double windows let the shipping address and return address show through, saving you from having to manually apply labels. These Staples white envelopes come in a box of 1,000 units, so there's plenty to take on even the largest mailing tasks.