Keep the air inside your printer cleaner with the genuine QIDI Max4 3-in-1 Air Filter. This compact replacement filter combines a G3 pre-filter, H12 HEPA layer, and coconut-shell activated carbon to capture airborne particles while helping reduce odors and VOCs generated during printing. Designed specifically for the Max4, it is an easy maintenance replacement for keeping the printers built-in filtration system working effectively.