10 x 15 Booklet Envelopes - 28lb. Brown Kraft (50 Qty. ) | Perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations | 28lb. Text Paper | 11173-50 10 x 15 Booklet Envelopes / 10 in. x 15 in. / 10" x 15" / 254mm x 381mm Color: 28lb. Brown Kraft - Business-grade, Brown Kraft is actually an orangey brown -- the businessy color you've seen in the mail all your life. Quantity: Pack of 50 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.