Using these 4" x 6" Flat Cards you can create your very own Invitations or announcements for your wedding, anniversary, or other celebration. These are also great to use as Postcards, Announcements, Photo Cards, and much more. Our 4" x 6" Flat Cards are designed to work with your home inkjet or laser printer. These flat cards measure 4" x 6" and are made from a heavyweight white cardstock (80lb Cover, 218 gsm).