LUX #9 Window Envelopes, 3 7/8" x 8 7/8", White w/ Simple Seal, 50 Qty (45313-50)

When sending letters, invoices or statements, save the time and expense of separately addressing envelopes. Simply position the address to show through the window, or choose our full-face windows, which are large enough to show off the entire contents. Available in a variety of styles and colors, printed or plain. To seal this envelope - flip up the second flap (exposing the adhesive), hold the main flap down over the exposed adhesive, and the envelope will be sealed.