Our two per page gray invitations measure 4 1/4" x 5 1/2" when folded. Use our greeting cards as wedding, birthday, or holiday invitations. Create your own wedding or party invitations, or send others personalized greetings! This product is made from a 110 lb Index card stock. Keep in mind that 110 lb Index stock is equivalent to 74lb cover, 53lb bond and 200 gsm.