5″ x 7″ Single Flat Cards work great as announcements, invitations, or postcards. These 5″ x 7″ flat cards measure 5″ x 7″ and contain no folds, scores, or perforations. This 5″ x 7″ Flat Card is made from an 80lb Cover (218 gsm) Black cardstock and is Inkjet & Laser printer compatible.Note: If mailed as a postcard, this size would require extra postage.