Keep chamber temperatures stable and engineering materials printing reliably with the genuine QIDI Max4 Chamber Heater with Fan. This OEM assembly actively heats and circulates air throughout the build chamber, helping reduce warping, improve layer adhesion, and maintain a more consistent printing environment for materials such as ABS, ASA, nylon, and other temperature-sensitive filaments. It is the correct replacement for a failed heater or circulation fanand considerably cheaper than turning your Max4 into a very large PLA-only printer.