6 x 9 Booklet Contour Flap Envelopes - Ruby Red (50 Qty) | Perfect for mailing Documents, Catalogs, Direct Mail, Promotional Material, Brochures and More| EX-1820-18-50 Size: 6 x 9 Booklet Contour Flap 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.