The Advanced Printing Kit is specifically designed to ensure consistent and quality results when printing with materials like ABS, PP, CPE+, or PC on the Ultimaker 3 or the Ultimaker 3 Extended. The front enclosure protects prints from air currents and ensures a stable temperature environment within the printer, while adhesion sheets provide a better adhesion surface. It is recommended to use the adhesion sheets when printing with Polypropylene, CPE+, or Polycarbonate material, but they should not be used when printing with TPU 95A - this material adheres too well to the sheet and it will be hard to remove models after printing.