Avery® Sure Feed Postcards - 97 Brightness - 6" x 4" - Matte - 100 / Box - Perforated, Heavyweight, Rounded Corner, Print-to-the-edge, Recyclable - White Create invitations, announcements and reminders using an inkjet printer. Heavyweight cardstock sheets feed automatically from a paper tray and yield two cards per letter-size sheet. Ultra-fine perforations let cards separate easily and cleanly. Matte-coated surface on both sides delivers vivid graphics and sharp text. Avery offers many easy-to-use templates for Microsoft Word and other popular software programs. Weight meets federal postal standards.