Trim line. This is where the card is trimmed. Visualize it as being the allowance among the security line and bleed place. All our cardstock selections are thick enough for printing on both sides. But If you would like a more premium, upscale really feel, we suggest the 16 pt. https://gratis-directory.com/listings13102287/not-known-facts-about-catalog-printing-services-in-ca