Laminated Kraft fiberboard mailer is ideal for financial reports, manuals, photos, graphics and sheet music. Extra rigid, heavyweight construction resists bending and delivers superior corner and edge durability. Self adhesive closure and rip open tear strip make sealing and opening easy. Envelope Size 12 12 x 15 Global Product Type EnvelopesMailers EnvelopeMailer Type Recycled Mailer Closure Self Adhesive.