ShenPaz unique muffle, with its Advanced Temperature Control (ATC) technology, gives you the fullest confidence in your firing results. With no quartz barrier, the muffle facilitates direct radiation on your ceramic surface, giving you optimal translucency and vitality. Its long lifespan ensures the achievement of uniformed firing results time after time. ATC Muffle for Precision Performance Totally uniform heat distribution. Precise temperatures at lower, middle and high levels. Enhances productivity with high speed cooling (furnace head cools quicker so you can start next cycle sooner). Firing temperature up to 1,180ºC (2156°F), with heat rate between 10-120 ºC (50-248º F)/min Durable Khantal spiral material.