The V3 Pro Metal Screen, designed by XMAX, serves as an effective filter to prevent any dry herb particulates from entering the vapour pathway or reaching your mouth during the usage of the XMAX V3 Pro Dry Herb Vaporizer. These specialized metal screens are strategically positioned at the base of the V3 Pro Mouthpiece. It is important to note that replacement screens, which are authentic manufacturer components, ensure a precise fit for optimal functionality.