6 x 9 Booklet Envelopes - Ruby Red (50 Qty.) Size: 6 x 9 Booklet Envelopes / 6 in x 9 in / 6" x 9" / 152mm x 229mm Quantity: Pack of 50 Color: Ruby Red USES: Catalogs, Annual Reports, Brochures, Magazines, Invitations and so much more! Applications: Business Mailings, Direct Mail, Corporate Mailings, Financial Mailings, Personal Mail. Printable on off-set printing presses and some home printers.