White Business Window Envelopes, 3 7/8" x 8 7/8", 250 Pack

#9 Window Envelopes are widely used for business mailings and invoices. They are designed to hold documents and feature a window that displays the recipient’s address. These envelopes are typically used as reply envelopes, allowing recipients to send items back to the sender easily. They are a common choice for mailing invoices and other business correspondence, providing a professional appearance and convenient functionality.