50 Count 6 x 9 Booklet Window Envelopes BOOKLET WINDOW ENVELOPES: 6? x 9? Booklet Window Envelopes are perfect when sending invoices, statements, magazines, catalogs, and business pamphlets. You?ll save the time and expense of separately addressing individual envelopes, making them perfect for business correspondence. Simply position the address to show through the window. MOISTENABLE GLUE SEAL: These envelopes are designed with a traditional moistenable adhesive sealing method, making them an excellent option for quick and easy projects. To seal, use the moistening method of your choice. Simply moisten the strip of adhesive, apply pressure, and you?ll have the perfect seal. It couldn?t be easier! ADD TO YOUR SHIPPING SUPPLIES: These 6? x 9? envelopes are the perfect size for shipping a variety of materials and small items. The professional look will reflect on you, making you or your small business appear more official. Whether you use these mailing supplies for your business, professional, or even personal use, we have a variety of styles and colors that are adaptable to any use. DURABLE RELIABLE: Made from heavyweight paper stock with a sturdy construction, these envelopes are thick and durable, making them perfect for things like letters, mailings, personal mail, or invitations. No matter what you decide to use these envelopes for, whatever is inside is sure to arrive in perfect condition.