Our 4″ x 6″ single flat cards are great for announcements, invitations, greeting cards or postcards. Made from an 85lb cover (230 gsm) Inkjet Photo Matte cardstock, these flat cards measure 4″ x 6″. The Inkjet Photo Matte finish is on both sides of the cards and produces rich, vibrant colors for your photos! These single invitations are Inkjet compatible only!